# Chapter 1. The Problem of Multiple Comparisons

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Stat Tutor
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1:11

### Question 1.1

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Correct. Three separate two-sample proportion tests are required to compare three proportions.
Incorrect. Three separate two-sample proportion tests are required to compare three proportions.
2
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1:59

### Question 1.2

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Correct. Stating one hypothesis and knowing which P-value to use, how to interpret them and use them are all problems with multiple comparisons. You can, however, use the same level of significance for all of the tests.
Incorrect. Stating one hypothesis and knowing which P-value to use, how to interpret them and use them are all problems with multiple comparisons. You can, however, use the same level of significance for all of the tests.
2
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3:22

### Question 1.3

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Correct. We use a chi-square test to compare three or more proportions.
Incorrect. We use a chi-square test to compare three or more proportions.
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