Chapter 1. Adding categorical variables to scatterplots

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Question 1

0:21

Question 1.1

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Correct. Since we can see a linear pattern, there is a relationship, but it is not “very strong," only moderate.

Incorrect. Since we can see a linear pattern, there is a relationship, but it is not “very strong," only moderate.

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Questions 2-3

0:58

Question 1.2

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Correct. This is a correct statement.

Incorrect. This is a correct statement.

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Question 1.3

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Correct. The relationship is stronger within each type than when type is ignored.

Incorrect. The relationship is stronger within each type than when type is ignored.

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