Trying to run a Tukey's Test, but I am getting an error

[technocrat]

@kelly

spec_tbl_df [389 x 6] (S3: spec_tbl_df/tbl_df/tbl/data.frame)
 $ user_id                  : num [1:389] 1 1 1 1 1 1 1 1 1 1 ...
 $ total_steps              : num [1:389] 13162 10735 9762 12669 9705 ...
 $ calories                 : num [1:389] 1985 1797 1745 1863 1728 ...
 $ distance                 : num [1:389] 8.5 6.97 6.28 

So, you are going to?

spec_tbl_df$sleep_category  <- as.factor(spec_tbl_df$sleep_category)