单项选择题
Descriptive statistics deals with methods of（）
A.organising data.
B.summarising data
C.presenting data in a convenient and informative way
D.doing all of the above
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相关考题
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单项选择题
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.population
B.sample
C.parameter
D.statistic -
单项选择题
A summary measure that is computed from a sample to describe a characteristic of the population is called（）
A.a parameter
B.a statistic
C.a population
D.Both A and C are correct，since they are the same -
单项选择题
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 （）.
A.population
B.sample
C.parameter
D.statistic
