what is dummy coding for contrasts how to code a dichotomous variable contrast coding in regression how to code a dichotomous predictor what is the contrast used in regression analysis? what is the difference between contrasts dummy coded how to code contrasts how do you code contrasts in regression what contrast should one use? how to code a dichotomous variable dummy coding contrast contrast in dichotomous variable what is the contrast for dichotomous variables what contrasts are used for dichotomous variables why use contrast for dichotomous predictors what is the contrast for a dichotomous predictor? difference between contrast and contrasts in dichotomous variables what is a contrast what is the contrast for a dichotomous variable? what is dummy coding for contrast