So, I have categorical variables for "most dominant religions in the world" (Islam, Protestant, Catholic, Orthodox and Others). So, when I am writing the regression model, how should I write it?
% of women in parliament= B0+ B1 (Most Dominant Religion)+ B2 (Education)+e ?
Or % of women in parliament= B0+ B1 (Islam)+ B2 (Protestant)+ B3 (Catholic)+ B4 (Orthodox)+ B5 (Other religions)+ B6 (% of population with secondary education)+e So precisely, my question is: in case of categorical variables (race/ religion); do we consider each race/ religion as a single variable? And I should run the bivariate between % of women in parliament and Islam?