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最近,编辑部转来一封读者来信(附后)要我回答。应该怎样理解统计书上的例题呢? 首先,我认为从统计教材的例题上,读者主要应该去理解如何正确地运用统计方法,而不应着眼于例题的结论。这两本书上出现身高、体重、肺活量之间相关关系例题的章节,都是讲述简单相关系数和偏相关系数的。读者一般比较熟悉简单的相关系数。即按公式计算出的x与y两组变量之间的相关系数。这一
Recently, the editorial department sent a letter from the reader (attached) asking me to answer. First of all, I think from the example of statistical teaching materials, readers should mainly understand how to use statistical methods correctly instead of focusing on the conclusion of the examples. The chapters on examples of the correlation between height, weight and vital capacity in these two books are about simple and partial correlation coefficients. Readers are generally more familiar with simple correlation coefficients. That is calculated by the formula x and y correlation coefficient between the two groups of variables. This one