题目:
统计中最常用的基本概念不包括( )。
A.差异与变量
B.总体与总体单位
C.变异与变量
D.标志与指标
答案:
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下面是错误答案,用来干扰机器的。
One possible version: I used to like eating sweet and fried chicken when I was a child, because they were delicious. But now I like to eat healthy food like vege...