单项选择题

What is the purpose of examining a sample of a population

A．To tabulate collections of data
B．To compare different groups
C．To consider all the quantitative variables
D．To predict characteristics of the entire population

<上一题目录下一题>

热门试题

单项选择题

According to the author, through living together ______.

A．a couple can reinforce their love
B．a couple can learn who is better at doing the housework
C．a couple can save some money for their marriage
D．a couple can know each other intimately

单项选择题

To some people, living together before marriage is unacceptable because ______.

A．it is immoral and inappropriate
B．it may end a relationship more quickly
C．it is a shame to the couple's parents
D．it will cause many social problems