Question: Problem 13 in Chapter 15 examined the relationship between weight and income for a sample of n = 8 men. Weights were classified in five

Problem 13 in Chapter 15 examined the relationship between weight and income for a sample of n = 8 men. Weights were classified in five categories and had a mean of M = 3 with SS = 18.

Income, measured in thousands, had a mean score of M = 88 with SS = 21,609, and SP = 330.

a. Find the regression equation for predicting income from weight. (Identify the weight scores as X values and the income scores as Y values.)

b. What percentage of the variance in the income is accounted for by the regression equation?

(Compute the correlation, r, then find r2

c. Does the regression equation account for a significant portion of the variance in income?

Use α = .05 to evaluate the F-ratio.

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