search for: proximity1

Hello, I try to plot the marginal effect by using package "effects" (example of the graph i want to get is in the attached picture). All variables are continuous. Here is regression function, results and error effect function gives: > mreg01 = lm(a90$enep1 ~ a90$enpres + a90$proximity1 + (a90$enpres * a90$proximity1), data=a90)> summary(mreg01) Call: lm(formula = a90$enep1 ~ a90$enpres + a90$proximity1 + (a90$enpres * a90$proximity1), data = a90) Residuals: Min 1Q Median 3Q Max -2.3173 -1.3349 -0.5713 0.8938 8.1084 Coefficients:...