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A.第一类错误被称为弃真错误
B.第一类错误被称为纳伪错误
C.第二类错误被称为纳伪错误
D.第二类错误是原假设不正确，但却被接受的错误
E.第一类错误是原假设正确，但却被拒绝的错误
A.完备性原则
B.同质性原则
C.整齐可比性原则
D.互斥性原则
E.均衡分散性原则
最新试题
One advantage of a stem and leaf plot over a frequency distribution is that （）.
一个地区一定时期的商品零售额属于（）
企业生产一种产品需顺次经过四个车间，这四个车间的废品率分别为1.5%、2.0%、2.0%和1.0%。该企业生产这种产品的平均废品率是多少？
A summary measure that is computed from a sample to describe a characteristic of the population is called（）
品合格率指标是（）
Simon Arnett, Director of Human Resources, is exploring the causes of employee absenteeism at Buderim Bottling during the last operating year (1 January 2005 to 31 December 2005). The average number of absences per employee, calculated from the personnel data of all employees, is a （）.
Simon Arnett, Director of Human Resources, is exploring the causes of employee absenteeism at Buderim Bottling during the last operating year (1 January 2005 to 31 December 2005). Personnel records of 50 employees are selected for analysis. (The plant employs 250.) For this study, the average number days absent for these 50 employees is a （）.
A cumulative frequency distribution would provide（）.
以2000年a0为最初水平，2016年an为最末水平，计算钢产量的年平均发展速度时，须开（）
Which of the following statements is not true？（）