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    chi-square, regr.analysis, help please!

    Hi to all! I am answering some statistics questions from the course I have in statistics, and have some problems answering them. I thought somebody from the forum will volunteer to help, if s/he can, as I have to submit the answers to my teacher as soon as possible. 1. One of them is: whether a...
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    Need first aid, a few short questions

    Hi to all, I am new and in trouble with a statistics course, and I ask anybody to help if he/she can with answering a few questions, please. Whoever can help in any way, please, do so. The questions are: 1. Why do post-hoc tests have less power than t-tests? 2. What are the advantages of...