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Regression Analysis: Gambling Amount ($) versus Sex, Status, Sex:Status, Income ($100)

Model Summary

S R-sq R-sq (adj)

52.24%

21.7798 56.39%

Coefficients

Term

Constant

Coef SE Coef I-Value P-Value

30.1

16.7

1.80

0.079

Sex

-3.40

0.002

Status

-0.481 0.269 -1.79

0.081

Sex: Status

1.088

0.460

2.37

0.023

Income ($100) 4.970

0.984

5.05

0.000

-68.2

20.1

Regression Equation

Gambling Amount ($) 30.1 - 68.2 Sex 0.481 Status + 1.088 Sex: Status

+ 4.970 Income

a. What is the predicted Gambling Amount for a female with income of $350 whose parents

have a Status score of 70? (Recall that in the Sex variable, females are coded with a 1;

males with 0. Status is recorded on a scale of 1 to 100 and note that Income is recorded

in $100s.)

b. What is the predicted Gambling Amount for a female with income of $350 whose parents

have a Status score of 80?

c. What is the predicted Gambling Amount for a male with income of $350 whose parents

have a Status score of 70?

d. What is the predicted Gambling Amount for a male with income of $350 whose parents

have a Status score of 80?

e. Interpret the total effect of Status on Gambling Amount for both females and males.

(Hints: Interpret for the females and males separately. Make sure to account for the

interaction effect)

Fig: 1