偏差那么大表明不是随机分布,人为动过了。
换句话说这个统计不能描述学生的真实状况。
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难道有mean的数据吗,何来偏差大之说
-爱睡觉的小猪-
♀
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04/01/2021 postreply
19:05:08
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刚明白过来,这是指楼主的奇葩数据
-爱睡觉的小猪-
♀
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04/02/2021 postreply
06:25:45
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