Example 5

Polytomous Regression : Ordered Response Model.

A total of 21 respondents, in a new product test marketing survey, yielded the following data. (Data Coding: Response: 1-No liking, 2- Slight liking, 3-Moderate liking, 4-Liking, 5-Much liking; gender:0-female, 1-male; age:0-young, 1-old; income:0-low, 1-high; count: number of respondents)

Notice that the p-value for the coefficient of the covariate 'age' is not significant under the asymptotic method (p=0.05394), but it is significant under the Exact method (p=0.0279).