题目
A chi-square test is most appropriate for tests concerning:
选项
A.a single variance.
B.differences between two population means with variances assumed to be equal.
C.differences between two population means with variances assumed to not be equal.
答案
A
解析
： A is correct. A chi-square test is used for tests concerning the variance of a single normally distributed population. ： A正确。 卡方检验用于检验单个正态分布总体的方差。