Interpret the odds ratios. Refer to the previous exercise. The researchers also reported odds ratios with 95% con?dence intervals for this logistic regression model. Here is a summary:
95% Con?dence Limits
|
Explanatoryvariable
|
Odds ratio
|
Lower
|
Upper
|
|
Reader age
|
1.65
|
1.27
|
2.16
|
|
Model gender
|
3.70
|
2.74
|
5.01
|
|
Men's magazines
|
0.96
|
0.67
|
1.37
|
|
Women's magazines
|
1.57
|
1.11
|
2.23
|
(a) Explain the relationship between the con?dence intervals reported here and the results of the Wald z signi?cance tests that you found in the previous exercise.
(b) Interpret the results in terms of the odds ratios.
(c) Write a short summary explaining the results. Include comments regarding the usefulness of the ?tted coef?cients versus the odds ratios.