如题,自变量分别为为两个连续变量和一个分类变量,因变量为一个连续变量如何做多元回归分析??特别是交互项如何得来?
看过一篇文献讲到此类分析方法,但是不明白,请大神帮忙:When agency, communion, and condition (1 =self, 1= other) and their interactions were entered as predictors of self-esteem (or a global evaluation in the other-perception condition), the interaction of all three variables was significant,b=.29, p = .009, along with main effects of agency and communion, the bs being .26 and .30. To decompose this
interaction, we performed similar regression analyzes for the self- and other-perceptions separately.
我的问题是:含义分类自变量的如何计算交互作用,依然是相乘得来吗?