1. Learn
    2. /
  2. Courses
    3. /
  3. R For SAS Users

Exercise

Summarise output

While the summary() function is useful, it is limited to only the statistics built into that function. To get more specific statistics of interest, you've seen that the summarise(across(everything(), list())) syntax from the dplyr package can be used.

In this exercise, you will use summarise(across(everything(), list())) to compute the mean, standard deviation, median, minimum and maximum of the abalone diameters. You will save the output and then extract specific elements.

The abaloneKeep dataset and dplyr package have been loaded for you.

Instructions

100 XP
  • Use summarise(across(everything(), list())) syntax to compute the mean, standard deviation, median, minimum, and maximum of diameter from abaloneKeep. Save the output as abdiam.
  • Use str() structure function to view the class type of abdiam and the names of the elements in abdiam.
  • Use the $ operator to select and display the diameter_sd element stored in abdiam.