问题
单项选择题
统计分组的原则是要体现（）。
A.组内差异性，组间同质性
B.组内同质性，组间差异性
C.组内差异性，组间差异性
D.组内同质性，组间同质性
答案
参考答案：B
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统计分组的原则是要体现（）。
A.组内差异性，组间同质性
B.组内同质性，组间差异性
C.组内差异性，组间差异性
D.组内同质性，组间同质性
参考答案：B
The reality show（真人秀节目）“Where are we going , Dad ?”becomes a show on TV these days . This TV show is about dads and their children who are from different families . They will complete（完成）some hard without moms in three days and two nights . The five dads have to play the of“dad”and“mom”at the same time . All of the five dads are famous people and they must forget their popularity（知名度） do as a normal father . The cell phones and toys aren’ t allowed in the show . They have to live in a very tough（艰苦的）environment . At first , all the five children cry . , they are just 4-6 years old . They never experience life in the countryside . But later they are all used to this kind of exciting life with their fathers . the five star kids , four-year-old Kimi impresses（使……有印象）people most . During the TV show , Kimi Is well-behaved , never shouts at others and always listens to his father , Jimmy . “The whole experience teaches him a lot ,”Jimmy says .“He now knows to behave well in public and how to be patient .” Jimmy’ s soft parenting skills , Kimi’ s cute face and their warm interaction（互动）on the show win many viewers’ hearts .
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