2.1 Demonstration: N Use R's length procedure to find the number of items in a variable (N). Copy and paste the R code in the righthand box below into the Snippets text box at https://rdrr.io/snippets/ and tap the "Run" button.

rdrr.io/snippets/

Line 1: Any line in R that starts with a hashtag is a comment and will be ignored. (Fun fact, the official name for that symbol is "octothorpe.")

Line 2: The length of the eruptions variable in the faithful data frame1 is printed, the same as the number of items in the variable, or N. Notice how a variable is identified using the data frame name, then a dollar sign, then the variable name.

R reports the following N. [1] 272

2.2 Activity: N Using the attitude2 data frame, find the number of items in the rating variable and include that number in the deliverable document for this lab.