Categorical Variables in Regression

摘要: In this chapter we will, for the most part, treat regression problems in which some of variables, both independent and dependent, are categorical. We begin, though, Section 1 with a brief treatment two sample tests, including description nonparametric tests differences location. This section provides classical background problem treated 2, analysis variance. Our is unusual that view as special case multiple set each taking on value either 0 or 1, constructed, so composite test significance at least one coefficients equivalent to equality k population means.