In order to distinguish between a set of dummy variables that have multiple categories so that the regression coefficients produce contrasts, the research may use what is referred to as:
A)Seamless coding
B)Linear coding
C)Effect coding
D)Relative coding

Question

Quizplus · Accepted Answer

Effect coding is used in regression analysis to code categorical variables with more than two categories into a format that can be used in the regression equation. This method allows for the comparison of each level of the categorical variable to the overall mean, rather than to a reference category as in dummy coding.

In Order to Distinguish Between a Set of Dummy Variables