Beschreibung
Produktdetails
Einband
Taschenbuch
Erscheinungsdatum
25.02.1993
Verlag
O'ReillySeitenzahl
96
Maße (L/B/H)
21.6/14/0.6 cm
Gewicht
135 g
Sprache
Englisch
ISBN
978-0-8039-5128-0
Social scientists are often interested in studying differences in groups, such as gender or race differences in attitudes, buying behaviors, or socioeconomic characteristics. When the researcher seeks to estimate group differences through the use of independent variables that are qualitative (i.e., measured at only the nominal level), dummy variables will 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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