Regression with Dummy Variables

Regression with Dummy Variables
ISBN-10
0803951280
ISBN-13
9780803951280
Category
Mathematics
Pages
90
Language
English
Published
1993-02-25
Publisher
SAGE
Author
Melissa A. Hardy

Description

It is often necessary for social scientists to study differences in groups, such as gender or race differences in attitudes, buying behavior, or socioeconomic characteristics. When the researcher seeks to estimate group differences through the use of independent variables that are qualitative, dummy variables allow the researcher to represent information about group membership in quantitative terms without imposing unrealistic measurement assumptions on the categorical variables. Beginning with the simplest model, Hardy probes the use of dummy variable regression in increasingly complex specifications, exploring issues such as: interaction, heteroscedasticity, multiple comparisons and significance testing, the use of effects or contrast coding, testing for curvilinearity, and estimating a piecewise linear regression.

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