ALTERNATIVE REPRESENTATIONS OF DUMMY VARIABLES AND THEIR INTERPRETATIONS
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The objective of the paper was to bring together some of the
preexisting theoretical treatments ~f dummy variables in regression
analysis and to present them in such a way as they could
be more effectively used and interpreted. This Will enable
researchers to select the particular representation that best suits
their hypotheses. Four alternatives were exhibited for both a
one-way analysis of variance and a one-way analysis of variance
with a covariate. The predicting equations were presented in the
text of the paper along with numerical examples and their
interpretations. The derivations of the predicting equations and
variable definitions were presented in the Appendix.