4.5 Homework

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Scatter plots and lines of fit.

INTERPRETING A SCATTER PLOT

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The scatter plot shows the earned run averages and the winning percentages of eight pitchers on a baseball team.

a) What is the winning percentage of the pitcher with an earned run average of 4.20?

b) What is the earned run average of the pitcher with

a winning percentage of 0.333?

c) What tends to happen to the winning percentage as the

earned run average increases?

(increases/decreases)

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Describe the relationship between the data in the scatter plot.

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Describe the relationship between the data in the scatter plot.

b) Interpret the y-intercept:

Solve for w: