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问题 单项选择题

多组资料的秩和检验，哪种情况下H值近似分布（）。

A.组数≥3，同时例数≥5

B.组数≥3，同时例数≥6

C.组数≥5，同时例数≥5

D.组数≥3，例数无限制

E.以上均不对

答案

参考答案：A

问答题

Jason is looking to purchase a 52 inch television. His friend Michael owns an electronic store and offers to sell him a television set having the required screen size for a particular price. Jason decides to take some further time to decide and see if he can obtain a further reduced price from another outlet. He subsequently receives a letter from Michael requesting that he take delivery of the television within a period of 15 days and that he pay the relative price he had offered him.Required:

(a) Explain whether the offer made by Michael has all the requisites for it to be deemed a valid offer made to Jason. (5 marks)
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问答题 案例分析题

某计量检定员经测量得到被测量估计值为y=5012.53mV，U=1.32mV，在报告时，检定员取不确定度为一位有效数字U=2m，测量结果为y土U=5013mV土2mV；核验员检查结果认为检定员把不确定度写错了，核验员认为不确定度取一位有效数字应该是U=1mV。

 

核验员在检查过程中，询问鉴定员：对y=1.50005ms，U=100015ns如何表示其数字检查其他报告结果发现：结果

 

检验员检查发现，计量检定员在对检定数据处理中，将从计算器上读得的测量结果为1235687μA，证书上报告时将测量结果简化写成y=1×106μA，是否正确？
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