Chapter 1. Tutorial: Regression 2

1.1 Problem Statement

Consider the plot of the number of drownings in a state vs. the total ice cream sales for the state over a 15 year period.

Figure 1.1: Figure Caption

1.2 Step 1

questions

Question 1.1

The dHzGF8IlCbmlv7hgHR1Bf0xsD+I= indicates that for every additional million dollars of sales of ice creams, the expected number of drownings increases by ot+qaZUmHUo=.

Correct.
Incorrect.

Question 1.2

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Correct.
Incorrect.

Question 1.3

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Correct.
Incorrect.

1.3 Step 2

Consider the following plots of a relationship between X and Y.

Figure 1.2

You might be surprised to learn that the R2 = 0.666 for ALL of the above plots!

For each of the below explanations, select the appropriate set:

Question 1.4

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Correct.
Incorrect.

Question 1.5

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Correct.
Incorrect.

Question 1.6

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Correct.
Incorrect.

Question 1.7

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Correct.
Incorrect.