
- UID
- 223274
- 帖子
- 238
- 主题
- 123
- 注册时间
- 2011-7-11
- 最后登录
- 2013-8-21
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“I don’t really understand this. The formula for variance of the sample means = (sd squared)/n. Therefore, doesn’t it make sense that as degrees of freedom get larger, that also means n gets larger, making the right side of the equation (and thus the left side i.e. the variance) also approach zero? This would make choice B a true statement. ”
I agree with you I don’t understand it either. Can anyone else explain this without just saying “ya it’s B”. We know it’s B, we want to know WHY. Thanks |
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