== CHECK RESULTS ========================================

*   checking examples ... ERROR
    ```
    ...
    List of 5
     $ label    : chr "1978 Automobile Data"
     $ notes    : chr [1:2] "from Consumer Reports with permission" "1"
     $ names    : chr [1:12] "make" "price" "mpg" "rep78" ...
     $ row.names: int [1:74] 1 2 3 4 5 6 7 8 9 10 ...
     $ class    : chr "data.frame"
    > str(g)
    'data.frame':       74 obs. of  12 variables:
     $ make        : chr  "AMC Concord" "AMC Pacer" "AMC Spirit"
"Buick Century" ...
     $ price       : num  4099 4749 3799 4816 7827 ...
     $ mpg         : num  22 17 22 20 15 18 26 20 16 19 ...
     $ rep78       : num  3 3 NA 3 4 3 NA 3 3 3 ...
     $ headroom    : num  2.5 3 3 4.5 4 4 3 2 3.5 3.5 ...
     $ trunk       : num  11 11 12 16 20 21 10 16 17 13 ...
     $ weight      : num  2930 3350 2640 3250 4080 3670 2230 3280 3880 3400 ...
     $ length      : num  186 173 168 196 222 218 170 200 207 200 ...
     $ turn        : num  40 40 35 40 43 43 34 42 43 42 ...
     $ displacement: num  121 258 121 196 350 231 304 196 231 231 ...
     $ gear_ratio  : num  3.58 2.53 3.08 2.93 2.41 ...
     $ foreign     :Error: `x` and `labels` must be same type
    Execution halted
    ```