summarise_at using different functions for different variables

Question

When I use group_by and summarise in dplyr, I can naturally apply different summary functions to different variables. For instance:

    library(tidyverse)

          


        

Answer 1

Since your question is about "summarise_at";

Here is what my idea is:

df %>% group_by(category) %>% 
 summarise_at(vars(x, y, z),
      funs(mean = mean, sd = sd, min = min),
      na.rm = TRUE)