19 December 2017 3 6K Report

When we use t test to compare two sample means, the testing statistics of paired variables and that of independent variables are different. However, whether the two variables are dependent will not change the way of forming the testing statistics in the comparison of two sample proportions. Why?

(The attached picture is from the course material of Inferential Statistics, an online course by Duke.)

PS. I cannot imagine what we can do to adjust for the dependence of paired variables when comparing their proportions. But I still think there is something we should do as in the test for two sample means.

Sincere thanks to anyone who pays attention to this question!!

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