At times it is convenient to draw a frequency bar plot; at times we prefer not the bare frequencies but the proportions or the percentages per category. There are lots of ways doing so; let’s look at some ggplot2 ways. First, let’s load some data. data(tips, package = "reshape2") And the typical libraries. library(dplyr) library(ggplot2) library(tidyr) library(scales) # for percentage scales Way 1 tips %>% count(day) %>% mutate(perc = n / nrow(tips)) -> tips2 ggplot(tips2, aes(x = day, y = perc)) + geom_bar(stat = "identity") Way 2 ggplot(tips, aes(x = day)) …