长下影线选股公式回弹法检测混凝土抗压强度标准差和推定值的计算方法 公式

marketing strict internal cost control, business and innovation performance. --Increasing electricity access, price increase, electricity supply is guaranteed. In 2012, the company with coal inventory, get rewards of Jiangsu provincial government power to 266 million kWh. Through the bilateral trade, access to electricity 1.695 billion kWh, seeking removal compensation when the power 50 million-kilowatt, 116% market share in Jiangsu Province ranked first in the same capacity, the same type units. Company closely tracked coal linkage policies on July 1 and August 20 respectively increase prices 2.08 minutes and 2.5 points, profitability increased significantly. 公... Job grading, remuneration of labour agreements into long-term contract workers compensation system, stimulating the enthusiasm of the staff. --Further strengthening of human resources management. Full implementation of the performance appraisal regulations, incentive effect. Complete the reserve cadre
evaluation and selection, produced 10 primary reserve cadres and 11 secondary reserve cadres. Implementation of operation staff induction gang system, 14 staff posts be promoted. Strengthening the cultivation of professional technical leaders, selected coverage 9 13 factory-level professional and technical leaders. To enhance staff skills training, 8 staff technicians. Labor contract law compliance, contracts of up to 100%. --Star team- building to advance further. Establish a ding system implementation, and promoting the whole- building goals, strengthen group management. Team building into a performance review, promoting the construction of the star team depth. This year, respectively, 1 track, 4 team four star rated five-star by Datang and the team. Four, insists on construction ofonious development, really good job of party constuction and the independent Commission against corruption, strengthening the humanistic care and
psychological counseling, the enterprise culture construction to a new level. --Building of enterprise culture is fruitful. Companies adhere to the Shenhua lead of corporate culture, culture of responsibility at the core, to safety culture, a culture of learning, ethical culture, cost culture culture system-assisted, through various cultural integration, has boosted business centre, this year has won the nese cultural management advanced unitnced Unit in the building of enterprise culture of reform and opening up 30other honorary titles. The liability of the company culture: solving management problems of corporate culture project was awarded the CEC national electric power enterprise culture achievement award of excellence. The accident early warning and prevention system was rated as China's power of innovation management, innovation management of electric power enterprise in Jiangsu Province. --Party and the independent Commission against corruption
continues to strengthen. Was carried out to
回弹法检测混凝土抗压强度标准差和推定值的计算方法 公式？
2011-11-7 21:36
提问者：匿名 | 浏览次数：869次
我来帮他解答
推荐答案2011-11-7 21:48
混凝土回弹要十个以上测 区，每个测区16个测点，去掉3个最
大、3个最小回弹值，算剩余10个回弹值平均值，再进行角度< br>修正，浇筑面修正，然后根据修正后的回弹平均值和碳化深度查
表（测强曲线）。如果混凝土是泵 送施工，还要根据碳化深度及
混凝土强度再修正一次。 计算测区强度平均值=各测区强度之和
测区个数 计算标准差=所有数的平方和减去平均值的平方乘以< br>数的个数，所得结果除以数的个数减一，再把所得值开根号，得
到的数就是这组数的标准差。 按批检验时，混凝土强度推定值=
测区强度平均值-1.645标准差。
关于混凝土回弹强度计算过程中，标准差计算方式的疑问。
2011-4-8 11:40
提问者：匿名 | 浏览次数：2685次
根据《回弹法检测混凝土抗压强度技术规程JGJ _T23-2001》规
定，混凝土结构或构件测区数在10个及10个以上时要计算强度
标准 差，规程上边的公式为：标准差=所有数的平方和减去平均
值的平方乘以数的个数，所得结果除以数的个 数减一，再把所得
值开根号。也就是说，该公式根号内分子为：Xi^2-X^2求和（Xi
e curity, profit, maintain stability and promote harmonious developmentn content of the nteespractice activities and conduct, for exampleparty and further improvement of the level of work. Staff participating in the honest and clean culture construction seminars, staff's sense of probity and enhanced. Founded by honest inspectors team composed of 12 employees to broaden the channels of supervision. Adhere to establish p activities, staff satisfaction rate of 98% to the team. --Group work dynamic. Promoting the openness of factory Affairs, proposal for a love letter box, to the vital interests of the staff Trade Union delegation leader meeting of the 26 system to discuss and safeguard their democratic rights. Improve the organizational structure of the mission, the work of strengthening. Organize maintenance labor emulation and Cupskills of staff. Organized
a variety of cultural activities, physical and mental health care staff, to create a harmonious atmosphere. During the Wenchuan earthquake, donated all the company employees, to love, to support the disaster areas. This year, the company has won the can be controlled, money should not be wasted ement philosophy, management analysis, to improve management quality, improve cost control capacity and market competitiveness. Innovation of science and technology--science and technology innovation is to play the role of science and technology as the primary productive force, active use of new technologies, new materials, new processes, new equipment, increase investment in science and technology, strengthening scientific and technological training, speeding up transforming scientific and technological achievements, forming a number of proprietary technology, enhancing core competitiveness. Resource-saving-the-resources saving enterprise was to
reduce coal consumption, water consumption, electricity at the core, enhance the operation of lean management to realize low consumption, high efficiency, reduce production costs. Second is to strengthen the business, financial, material, information and the optimization of organization and management, saving the internal transaction costs. Harmonious development of harmonious development--is to construct a development. XINGnal security firm and internal management of the internal management measures are effective, harmoniousprise coordinating development of homeopathy, well, get along with the neighbors 2013 five enterprises building intrinsic safety power company goals are: unplanned outage 0 times. Class of disorders 0, 0 is equivalent forced outage rate. No personal injury accident, material and equipment accidents do not occur, no fire, no environmental
pollution accident. Enterprise integrated to achieve zero cases of violation, zero accidents, zero. Quality goal is: when generating capacity ≥ 7.5
marketing strict internal cost control, business and innovation performance. --Increasing electricity access, price increase, electricity supply is guaranteed. In 2012, the company with coal inventory, get rewards of Jiangsu provincial government power to 266 million kWh. Through the bilateral trade, access to electricity 1.695 billion kWh, seeking removal compensation when the power 50 million-kilowatt, 116% market share in Jiangsu Province ranked first in the same capacity, the same type units. Company closely tracked coal linkage policies on July 1 and August 20 respectively increase prices 2.08 minutes and 2.5 points, profitability increased significantly. 公... Job grading, remuneration of labour agreements into long-term contract workers compensation system, stimulating the enthusiasm of the staff. --Further strengthening of human resources management. Full implementation of the performance appraisal regulations, incentive effect. Complete the reserve cadre
evaluation and selection, produced 10 primary reserve cadres and 11 secondary reserve cadres. Implementation of operation staff induction gang system, 14 staff posts be promoted. Strengthening the cultivation of professional technical leaders, selected coverage 9 13 factory-level professional and technical leaders. To enhance staff skills training, 8 staff technicians. Labor contract law compliance, contracts of up to 100%. --Star team- building to advance further. Establish a ding system implementation, and promoting the whole- building goals, strengthen group management. Team building into a performance review, promoting the construction of the star team depth. This year, respectively, 1 track, 4 team four star rated five-star by Datang and the team. Four, insists on construction ofonious development, really good job of party construction and the independent Commission against corruption, strengthening the humanistic care and
psychological counseling, the enterprise culture construction to a new level. --Building of enterprise culture is fruitful. Companies adhere to the Shenhua lead of corporate culture, culture of responsibility at the core, to safety culture, a culture of learning, ethical culture, cost culture culture system-assisted, through various cultural integration, has boosted business centre, this year has won the nese cultural management advanced unitnced Unit in the building of enterprise culture of reform and opening up 30other honorary titles. The liability of the company culture: solving management problems of corporate culture project was awarded the CEC national electric power enterprise culture achievement award of excellence. The accident early warning and prevention system was rated as China's power of innovation management, innovation management of electric power enterprise in Jiangsu Province. --Party and the independent Commission against corruption
continues to strengthen. Was carried out to
为第i个测区混凝土强度换算值，X为测区混凝土强度换算值的
平均值），但是根据数理统计中的标准差计算方式，根号内的分
子应该是（Xi—X）^2求和才对（ 评定压实度等也用的这个算法），
为什么回弹规程上边的标准差计算方式和数理统计的标准差计
算方式不同，他们的计算结果明显不一样，求高人指点，只会在
网上复制粘贴的朋友请绕道，求真相，谢 谢！
我来帮他解答
2011-4-8 14:35
满意回答
1.方差s^2=[(x1-x)^2+(x2-x)^2+......(xn-x)^2]n (x为真值) 2.标准
差=方差的算术平方根 以上计算公式中根号内的分母为n(即样
本个 数)，因为真值通常是未知的，当测量次数无限大时，其平
均值才等于真值，因此该公式适用于对总体的 所有样本进行测
量。此时真值基本上同平均值相同。 但实际工作中，通常仅对
总体的部分样本 进行测量，因此，仍用平均值代替真值来计算标
准差时就存在了偏差。通过系列数学推导，可以得到： 用
s^2=[(x1-x)^2+(x2-x)^2+......(xn-x)^2]（n-1） （ x为平均值）来
计算方差可以消除该偏差，该方差也叫无偏方差，将无偏方差开
根号可以得到标 准偏差（通常也称作标准差）。 标准差公式根号
内的[(x1-x)^2+(x2-x)^2+......(xn-x)^2] （即（Xi—X）^2求和） 经
过简单数学变换后即=(x1^2+x2^2+x3^2+……+xn^2)-n*x^2 ( 即
所有数的平方和减去平均值的平方乘以数的个数）
ecurity, profit, maintain stability and promote harmonious developmentn content of the nteespractice activities and conduct, for exampleparty and further improvement of the level of work. Staff participating in the honest and clean culture construction seminars, staff's sense of probity and enhanced. Founded by honest inspectors team composed of 12 employees to broaden the channels of supervision. Adhere to establish p activities, staff satisfaction rate of 98% to the team. --Group work dynamic. Promoting the openness of factory Affairs, proposal for a love letter box, to the vital interests of the staff Trade Union delegation leader meeting of the 26 system to discuss and safeguard their democratic rights. Improve the organizational structure of the mission, the work of strengthening. Organize maintenance labor emulation and Cupskills of staff. Organized
a variety of cultural activities, physical and mental health care staff, to create a harmonious atmosphere. During the Wenchuan earthquake, donated all the company employees, to love, to support the disaster areas. This year, the company has won the Cutting costs can be controlled, money should not be wasted nt philosophy, management analysis, to improve management quality, improve cost control capacity and market competitiveness. Innovation of science and technology--science and technology innovation is to play the role of science and technology as the primary productive force, active use of new technologies, new materials, new processes, new equipment, increase investment in science and technology, strengthening scientific and technological training, speeding up transforming scientific and technological achievements, forming a number of proprietary technology, enhancing core competitiveness. Resource-saving-the-resources saving enterprise was to
reduce coal consumption, water consumption, electricity at the core, enhance the operation of lean management to realize low consumption, high efficiency, reduce production costs. Second is to strengthen the business, financial, material, information and the optimization of organization and management, saving the internal transaction costs. Harmonious development of harmonious development--is to construct a development. XINGnal security firm and internal management of the internal management measures are effective, harmoniousprise coordinating development of homeopathy, well, get along with the neighbors 2013 five enterprises building intrinsic safety power company goals are: unplanned outage 0 times. Class of disorders 0, 0 is equivalent forced outage rate. No personal injury accident, material and equipment accidents do not occur, no fire, no environmental
pollution accident. Enterprise integrated to achieve zero cases of violation, zero accidents, zero. Quality goal is: when generating capacity ≥ 7.5
marketing strict internal cost control, business and innovation performance. --Increasing electricity access, price increase, electricity supply is guaranteed. In 2012, the company with coal inventory, get rewards of Jiangsu provincial government power to 266 million kWh. Through the bilateral trade, access to electricity 1.695 billion kWh, seeking removal compensation when the power 50 million-kilowatt, 116% market share in Jiangsu Province ranked first in the same capacity, the same type units. Company closely tracked coal linkage policies on July 1 and August 20 respectively increase prices 2.08 minutes and 2.5 points, profitability increased significantly. 公... Job grading, remuneration of labour agreements into long-term contract workers compensation system, stimulating the enthusiasm of the staff. --Further strengthening of human resources management. Full implementation of the performance appraisal regulations, incentive effect. Complete the reserve cadre
evaluation and selection, produced 10 primary reserve cadres and 11 secondary reserve cadres. Implementation of operation staff induction gang system, 14 staff posts be promoted. Strengthening the cultivation of professional technical leaders, selected coverage 9 13 factory-level professional and technical leaders. To enhance staff skills training, 8 staff technicians. Labor contract law compliance, contracts of up to 100%. --Star team- building to advance further. Establish a ding system implementation, and promoting the whole- building goals, strengthen group management. Team building into a performance review, promoting the construction of the star team depth. This year, respectively, 1 track, 4 team four star rated five-star by Datang and the team. Four, insists on construction ofonious development, really good job of party construction and the independent Commission against corruption, strengthening the humanistic care and
psychological counseling, the enterprise culture construction to a new level. --Building of enterprise culture is fruitful. Companies adhere to the Shenhua lead of corporate culture, culture of responsibility at the core, to safety culture, a culture of learning, ethical culture, cost culture culture system-assisted, through various cultural integration, has boosted business centre, this year has won the nese cultural management advanced unitnced Unit in the building of enterprise culture of reform and opening up 30other honorary titles. The liability of the companyculture: solving management problems of corporate culture project was awarded the CEC national electric power enterprise culture achievement award of excellence. The accident early warning and prevention system was rated as China's power of innovation management, innovation management of electric power enterprise in Jiangsu Province. --Party and the independent Commission against corruption
continues to strengthen. Was carried out to
4
标准差公式根号内的[(x1-x)^2+(x2-x)^2+......(xn-x)^2] （即
（Xi—X）^2求和） 经过简单数学变换后即
=(x1^2+x2^2+x3^2+……+xn^2)-n*x^2 ( 即所有数的平方和减
去平均值的平方乘以数的个数）
混凝土强度检验评定表怎么算
2011-11-14 13:00
提问者：匿名
|
浏览次数：
4470
次

混凝土强度检验评定表里的公式怎么算标准差SFCU怎么算 当n<10
时,Mfcu>=1.15fcu,K 这个fcu是抗压强度取那个数啊,K代表什么.最好能举个例
子说明一下.
我来帮他解答

2011-11-14 13:28
满意回答
< br>举例C30的混凝土，强度分别为32,32,33,33,34,34,35,35,36,36.标准 差是1.49.
平均值是34，
把1.49和34带入公式就可以了，因为1.49小于2 .5，所以带入公式的时候要
选定2.5。
因为标准差小于2.5的话取值2.5MPa。
10组λ1取值1.15，λ2取值0.9
这样你还不会算吗？
你认真看规范没有？上面说得很清楚了。公式在哪里摆着，还看不懂？

《混凝土 强度检验评定标准》GBT50107—2010。先要有一个概念在统计方法
评定中有“标准差已知方 案（样本容量为连续3组试件）”和“标准差未知方案（样
本容量不少于10组时）”
ecurity, profit, maintain stability and promote harmonious developmentn content of the nteespractice activities and conduct, for exampleparty and further improvement of the evel of work. Staff participating in the honest and clean culture construction seminars, staff's sense of probity and enhanced. Founded by honest inspectors team composed of 12 employees to broaden the channels of supervision. Adhere to establish p activities, staff satisfaction rate of 98% to the team. --Group work dynamic. Promoting the openness of factory Affairs, proposal for a love letter box, to the vital interests of the staff Trade Union delegation leader meeting of the 26 system to discuss and safeguard their democratic rights. Improve the organizational structure of the mission, the work of strengthening. Organize maintenance labor emulation and Cupskills of staff. Organized
a variety of cultural activities, physical and mental health care staff, to create a harmonious atmosphere. During the Wenchuan earthquake, donated all the company employees, to love, to support the disaster areas. This year, the company has won the can be controlled, money should not be wasted nt philosophy, management analysis, to improve management quality, improve cost control capacity and market competitiveness. Innovation of science and technology--science and technology innovation is to play the role of science and technology as the primary productive force, active use of new technologies, new materials, new processes, new equipment, increase investment in science and technology, strengthening scientific and technological training, speeding up transforming scientific and technological achievements, forming a number of proprietary technology, enhancing core competitiveness. Resource-saving-the-resources saving enterprise was to
reduce coal consumption, water consumption, electricity at the core, enhance the operation of lean management to realize low consumption, high efficiency, reduce production costs. Second is to strengthen the business, financial, material, information and the optimization of organization and management, saving the internal transaction costs. Harmonious development of harmonious development--is to construct a development. XINGnal security firm and internal management of the internal management measures are effective, harmoniousprise coordinating development of homeopathy, well, get along with the neighbors 2013 five enterprises building intrinsic safety power company goals are: unplanned outage 0 times. Class of disorders 0, 0 is equivalent forced outage rate. No personal injury accident, material and equipment accidents do not occur, no fire, no environmental
pollution accident. Enterprise integrated to achieve zero cases of violation, zero accidents, zero. Quality goal is: when generating capacity ≥ 7.5
marketing strict internal cost control, business and innovation performance. --Increasing electricity access, price increase, electricity supply is guaranteed. In 2012, the company with coal inventory, get rewards of Jiangsu provincial government power to 266 million kWh. Through the bilateral trade, access to electricity 1.695 billion kWh, seeking removal compensation when the power 50 million-kilowatt, 116% market share in Jiangsu Province ranked first in the same capacity, the same type units. Company closely tracked coal linkage policies on July 1 and August 20 respectively increase prices 2.08 minutes and 2.5 points, profitability increased significantly. 公... Job grading, remuneration of labour agreements into long-term contract workers compensation system, stimulating the enthusiasm of the staff. --Further strengthening of human resources management. Full implementation of the performance appraisal regulations, incentive effect. Complete the reserve cadre
evaluation and selection, produced 10 primary reserve cadres and 11 secondary reserve cadres. Implementation of operation staff induction gang system, 14 staff posts be promoted. Strengthening the cultivation of professional technical leaders, selected coverage 9 13 factory-level professional and technical leaders. To enhance staff skills training, 8 staff technicians. Labor contract law compliance, contracts of up to 100%. --Star team- building to advance further. Establish a ding system implementation, and promoting the whole- building goals, strengthen group management. Team building into a performance review, promoting the construction of the star team depth. This year, respectively, 1 track, 4 team four star rated five-star by Datang and the team. Four, insists on construction ofonious development, really good job of party construction and the independent Commission against corruption, strengthening the humanistic care and
psychological counseling, the enterprise culture construction to a new level. --Building of enterprise culture is fruitful. Companies adhere to the Shenhua lead of corporate culture, culture of responsibility at the core, to safety culture, a culture of learning, ethical culture, cost culture culture system-assisted, through various cultural integration, has boosted business centre, this year has won the nese cultural management advanced unitnced Unit in the building of enterprise culture of reform and opening up 30other honorary titles. The liability of the company culture: solving management problems of corporate culture project was awarded the CEC national electric power enterprise culture achievement award of excellence. The accident early warning and prevention system was rated as China's power of innovation management, innovation management of electric power enterprise in Jiangsu Province. --Party and the independent Commission against corruption
continues to strengthen. Was carried out to
利用计算器求平均值、标准差等
一、σ0（希腊字母名称读 音“西格马”）、SfCU在我们建工程混凝土强度检验评
是经常用的符号，它往往表示为“标准差”如 该公式若用中文语言表达意为：
标准差等于各数平方之和减去组数乘以平均值的平方，被组数减一除之后 ，再开
方。
举例：
某工地有11组设计强度等级为C15的混凝土试块，分别为17MPa、20.5 MPa、
21.5 MPa、19.8 MPa、21 MPa、19 MPa、21 MPa、17.5 MPa、20.8 MPa、
22 MPa、20.I MPa。
各数平 方之和：
172+20.52+21.52+19.82+212+192+212+17.52+20 .82+222+20.I2=298+420.2
5+462.25+392.04+441+361 +441+306.25+432.64+484+404.01=4433.44
平均值的平方：
［（17+20.5+21.5+19.8+21+19+21+17.5+20.8 +22 +20.I ）÷11］2=［220.2÷11］
2=20.=400.72757
组数乘以平均值的平方：11×400.72757=4408.0032则
Nmm2 < br>用这样的方法就是用计算器来算也还嫌慢、繁。实际带有2ndF功能的计算器都
可用其中的统计 学计算“标准差”运算功能。比如：TA—107A、SC107A，56机
型。
二、现以56机型求方差的操作方法如下：
1、按 ONC即 ONC 开机
2、按 2ndF
3、按 STAT即 ONC 显示器右上角显示 STAT
4、按数据如：26.4 显示器显示；26.4
5、按 DATA 即 M+ 显示器显示；1
重复按四、五步骤，输完全部数据，如总共26组数据则显示器显示；26。
6、按 S 即 RM → 标准差
7、按 X(―) 即 X→M →算术平均值
8、按 n 即 ） →数据的个数
ecurity, profit, maintain stability and promote harmonious developmentn content of the nteespractice activities and conduct, for exampleparty and further improvement of the level of work. Staff participating in the honest and clean culture construction seminars, staff's sense of probity and enhanced. Founded by honest inspectors team composed of 12 employees to broaden the channels of supervision. Adhere to establish p activities, staff satisfaction rate of 98% to the team. --Group work dynamic. Promoting the openness of factory Affairs, proposal for a love letter box, to the vital interests of the staff Trade Union delegation leader meeting of the 26 system to discuss and safeguard their democratic rights. Improve the organizational structure of the mission, the work of strengthening. Organize maintenance labor emulation and Cupskills of staff. Organized
a variety of cultural activities, physical and mental health care staff, to create a harmonious atmosphere. During the Wenchuan earthquake, donated all the company employees, to love, to support the disaster areas. This year, the company has won the Cutting costs can be controlled, money should not be wasted nt philosophy, management analysis, to improve management quality, improve cost control capacity and market competitiveness. Innovation of science and technology--science and technology innovation is to play the role of science and technology as the primary productive force, active use of new technologies, new materials, new processes, new equipment, increase investment in science and technology, strengthening scientific and technological training, speeding up transforming scientific and technological achievements, forming a number of proprietary technology, enhancing core competitiveness. Resource-saving-the-resources saving enterprise was to
reduce coal consumption, water consumption, electricity at the core, enhance the operation of lean management to realize low consumption, high efficiency, reduce production costs. Second is to strengthen the business, financial, material, information and the optimization of organization and management, saving the internal transaction costs. Harmonious development of harmonious development--is to construct a development. XINGnal security firm and internal management of the internal management measures are effective, harmoniousprise coordinating development of homeopathy, well, get along with the neighbors 2013 five enterprises building intrinsic safety power company goals are: unplanned outage 0 times. Class of disorders 0, 0 is equivalent forced outage rate. No personal injury accident, material and equipment accidents do not occur, no fire, no environmental
pollution accident. Enterprise integrated to achieve zero cases of violation, zero accidents, zero. Quality goal is: when generating capacity ≥ 7.5
marketing strict internal cost control, business and innovation performance. --Increasing electricity access, price increase, electricity supply is guaranteed. In 2012, the company with coal inventory, get rewards of Jiangsu provincial government power to 266 million kWh. Through the bilateral trade, access to electricity 1.695 billion kWh, seeking removal compensation when the power 50 million-kilowatt, 116% market share in Jiangsu Province ranked first in the same capacity, the same type units. Company closely tracked coal linkage policies on July 1 and August 20 respectively increase prices 2.08 minutes and 2.5 points, profitability increased significantly. 公... Job grading, remuneration of labour agreements into long-term contract workers compensation system, stimulating the enthusiasm of the staff. --Further strengthening of human resources management. Full implementation of the performance appraisal regulations, incentive effect. Complete the reserve cadre
evaluation and selection, produced 10 primary reserve cadres and 11 secondary reserve cadres. Implementation of operation staff induction gang system, 14 staff posts be promoted. Strengthening the cultivation of professional technical leaders, selected coverage 9 13 factory-level professional and technical leaders. To enhance staff skills training, 8 staff technicians. Labor contract law compliance, contracts of up to 100%. --Star team- building to advance further. Establish a ding system implementation, and promoting the whole- building goals, strengthen group management. Team building into a performance review, promoting the construction of the star team depth. This year, respectively, 1 track, 4 team four star rated five-star by Datang and the team. Four, insists on construction ofonious development, really good job of party construction and the independent Commission against corruption, strengthening the humanistic care and
psychological counseling, the enterprise culture construction to a new level. --Building of enterprise culture is fruitful. Companies adhere to the Shenhua lead of corporate culture, culture of responsibility at the core, to safety culture, a culture of learning, ethical culture, cost culture culture system-assisted, through various cultural integration, has boosted business centre, this year has won the nese cultural management advanced unitnced Unit in the building of enterprise culture of reform and opening up 30other honorary titles. The liability of the companyculture: solving management problems of corporate culture project was awarded the CEC national electric power enterprise culture achievement award of excellence. The accident early warning and prevention system was rated as China's power of innovation management, innovation management of electric power enterprise in Jiangsu Province. --Party and the independent Commission against corruption
continues to strengthen. Was carried out to
9、按 2ndF和 ∑X 即 ） →数据的和
10、按 2ndF和 ∑X2 即 X→M →数据的平方和
11、按 2ndF和 σ 即 RM →总体标准差
三、56机型计算器上具体的显示情况如下：


按键 显示器
DEG STAT
0
ONC 2ndF STAT


26.5 DATA 1
25.5 DATA 2
22.1 DATA 3
30.5 DATA 4
23.7 × 2 DATA 6
样本标准差 S 2.96
平均数 X(—)
25.33
同一检验批混凝土立方体抗压强设度的标准差应按下式计算：
（5.1.3—3）
式中： —同一检验批混凝土立方体抗压强设度的标准差（Nmm ）, 精确到
0.1（Nmm ）；当检验批混凝土强度标准差 计算值小于2.5Nmm2时，应取
2.5Nmm2；
当n<10时,Mfcu>=1.15fcu,K 这个fcu是抗压强度取那个数啊,K代表什么.最 好
能举个例子说明一下答：Mfc≥λ3?fcu,K，这个K不能分开。?cu,K是混凝土立方体抗压强度标准值即如：c15、c20、c25、c30……c80等。取λ3＝1.15时混凝
土强度等级要＜c60、若≥c60要取1.10。
ecurity, profit, maintain stability and promote harmonious developmentn content of the nteespractice activities and conduct, for exampleparty and further improvement of the evel of work. Staff participating in the honest and clean culture construction seminars, staff's sense of probity and enhanced. Founded by honest inspectors team composed of 12 employees to broaden the channels of supervision. Adhere to establish p activities, staff satisfaction rate of 98% to the team. --Group work dynamic. Promoting the openness of factory Affairs, proposal for a love letter box, to the vital interests of the staff Trade Union delegation leader meeting of the 26 system to discuss and safeguard their democratic rights. Improve the organizational structure of the mission, the work of strengthening. Organize maintenance labor emulation and Cupskills of staff. Organized
a variety of cultural activities, physical and mental health care staff, to create a harmonious atmosphere. During the Wenchuan earthquake, donated all the company employees, to love, to support the disaster areas. This year, the company has won the can be controlled, money should not be wasted nt philosophy, management analysis, to improve management quality, improve cost control capacity and market competitiveness. Innovation of science and technology--science and technology innovation is to play the role of science and technology as the primary productive force, active use of new technologies, new materials, new processes, new equipment, increase investment in science and technology, strengthening scientific and technological training, speeding up transforming scientific and technological achievements, forming a number of proprietary technology, enhancing core competitiveness. Resource-saving-the-resources saving enterprise was to
reduce coal consumption, water consumption, electricity at the core, enhance the operation of lean management to realize low consumption, high efficiency, reduce production costs. Second is to strengthen the business, financial, material, information and the optimization of organization and management, saving the internal transaction costs. Harmonious development of harmonious development--is to construct a development. XINGnal security firm and internal management of the internal management measures are effective, harmoniousprise coordinating development of homeopathy, well, get along with the neighbors 2013 five enterprises building intrinsic safety power company goals are: unplanned outage 0 times. Class of disorders 0, 0 is equivalent forced outage rate. No personal injury accident, material and equipment accidents do not occur, no fire, no environmental
pollution accident. Enterprise integrated to achieve zero cases of violation, zero accidents, zero. Quality goal is: when generating capacity ≥ 7.5
marketing strict internal cost control, business and innovation performance. --Increasing electricity access, price increase, electricity supply is guaranteed. In 2012, the company with coal inventory, get rewards of Jiangsu provincial government power to 266 million kWh. Through the bilateral trade, access to electricity 1.695 billion kWh, seeking removal compensation when the power 50 million-kilowatt, 116% market share in Jiangsu Province ranked first in the same capacity, the same type units. Company closely tracked coal linkage policies on July 1 and August 20 respectively increase prices 2.08 minutes and 2.5 points, profitability increased significantly. 公... Job grading, remuneration of labour agreements into long-term contract workers compensation system, stimulating the enthusiasm of the staff. --Further strengthening of human resources management. Full implementation of the performance appraisal regulations, incentive effect. Complete the reserve cadre
evaluation and selection, produced 10 primary reserve cadres and 11 secondary reserve cadres. Implementation of operation staff induction gang system, 14 staff posts be promoted. Strengthening the cultivation of professional technical leaders, selected coverage 9 13 factory-level professional and technical leaders. To enhance staff skills training, 8 staff technicians. Labor contract law compliance, contracts of up to 100%. --Star team- building to advance further. Establish a ding system implementation, and promoting the whole- building goals, strengthen group management. Team building into a performance review, promoting the construction of the star team depth. This year, respectively, 1 track, 4 team four star rated five-star by Datang and the team. Four, insists on construction ofonious development, really good job of party construction and the independent Commission against corruption, strengthening the humanistic care and
psychological counseling, the enterprise culture construction to a new level. --Building of enterprise culture is fruitful. Companies adhere to the Shenhua lead of corporate culture, culture of responsibility at the core, to safety culture, a culture of learning, ethical culture, cost culture culture system-assisted, through various cultural integration, has boosted business centre, this year has won the nese cultural management advanced unitnced Unit in the building of enterprise culture of reform and opening up 30other honorary titles. The liability of the company culture: solving management problems of corporate culture project was awarded the CEC national electric power enterprise culture achievement award of excellence. The accident early warning and prevention system was rated as China's power of innovation management, innovation management of electric power enterprise in Jiangsu Province. --Party and the independent Commission against corruption
continues to strengthen. Was carried out to
举例：如设计混凝土强度等级C20，现有试块20N㎜?、22N㎜ ?、24N㎜?、21N
㎜?、21N㎜?五组，Mfc＝（20﹢22﹢24﹢21﹢21）÷5＝2 1.6（N㎜?），λ3?fcu,K
＝1.15×20＝23（N㎜?），Mfc＝21.6（N㎜? ），λ3?fcu,K＝23（N㎜?），?cu,min
＝20（N㎜?），λ4＝0.9×20＝1 8（N㎜?），则Mfc＜λ3?fcu,K，?cu,min≥λ4?fcu,K，
该批混凝土强度评 定为不合格。
，

ecurity, profit, maintain stability and promote harmonious developmentn content of the nteespractice activities and conduct, for exampleparty and further improvement of the level of work. Staff participating in the honest and clean culture construction seminars, staff's sense of probity and enhanced. Founded by honest inspectors team composed of 12 employees to broaden the channels of supervision. Adhere to establish p activities, staff satisfaction rate of 98% to the team. --Group work dynamic. Promoting the openness of factory Affairs, proposal for a love letter box, to the vital interests of the staff Trade Union delegation leader meeting of the 26 system to discuss and safeguard their democratic rights. Improve the organizational structure of the mission, the work of strengthening. Organize maintenance labor emulation and Cupskills of staff. Organized
a variety of cultural activities, physical and mental health care staff, to create a harmonious atmosphere. During the Wenchuan earthquake, donated all the company employees, to love, to support the disaster areas. This year, the company has won the Cutting costs can be controlled, money should not be wasted nt philosophy, management analysis, to improve management quality, improve cost control capacity and market competitiveness. Innovation of science and technology--science and technology innovation is to play the role of science and technology as the primary productive force, active use of new technologies, new materials, new processes, new equipment, increase investment in science and technology, strengthening scientific and technological training, speeding up transforming scientific and technological achievements, forming a number of proprietary technology, enhancing core competitiveness. Resource-saving-the-resources saving enterprise was to
reduce coal consumption, water consumption, electricity at the core, enhance the operation of lean management to realize low consumption, high efficiency, reduce production costs. Second is to strengthen the business, financial, material, information and the optimization of organization and management, saving the internal transaction costs. Harmonious development of harmonious development--is to construct a development. XINGnal security firm and internal management of the internal management measures are effective, harmoniousprise coordinating development of homeopathy, well, get along with the neighbors 2013 five enterprises building intrinsic safety power company goals are: unplanned outage 0 times. Class of disorders 0, 0 is equivalent forced outage rate. No personal injury accident, material and equipment accidents do not occur, no fire, no environmental
pollution accident. Enterprise integrated to achieve zero cases of violation, zero accidents, zero. Quality goal is: when generating capacity ≥ 7.5