刘同学2018-03-25 16:12:00
Which of the following, holding all else constant, will most likely increase the width of the confidence interval for a parameter estimate? A Use of the t-distribution rather than the normal distribution to establish the confidence interval B Increase in the sample size C Reduction in the degree of confidence 降低自由度不是也可以加宽置信区间吗?
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金程教育顾老师2018-03-26 18:14:08
学员你好,degree of confidence是置信度的意思,不是自由度,降低置信度说明在这个区间内的概率小,为什么小呢,因为区间小。
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如果换成freedom of degree就对了吧?
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对的


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