# Chapter 1. The Chi-Square Distributions

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Stat Tutor
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1:12

### Question 1.1

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Incorrect. This is a true statement.
Correct. This is a true statement.
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Incorrect. Try again.
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1:53

### Question 1.2

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Incorrect. (r - 1)(c - 1) = (3 - 1)(2 - 1) = 2.
Correct. (r - 1)(c - 1) = (3 - 1)(2 - 1) = 2.
Incorrect. Try again.
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3:23

### Question 1.3

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Incorrect. Since df = 2, the "2" degrees of freedom row is used to find the P-value.
Correct. Since df = 2, the "2" degrees of freedom row is used to find the P-value.
Incorrect. Try again.
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3:34

### Question 1.4

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Incorrect. Because the test statistic requires computing a value for every cell and summing and because the chi-square table does not give exact P-values, using statistical software is much easier than by hand and is recommended.
Correct. Because the test statistic requires computing a value for every cell and summing and because the chi-square table does not give exact P-values, using statistical software is much easier than by hand and is recommended.
Incorrect. Try again.
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