Sorry if this is a really basic question. I have 4 dichotomous variables, each of which that can take on the values of 0 or 1. I want to have a graph that indicates the percentages 0s and 1s for each variable. I know for a single variable I can just use the histogram function. However, I need all four variables next to each other. So basically it would look like 4 histograms separated by small spaces, and I need the y-axis to indicate percentages, not frequencies. Any suggestions would be greatly appreciated!