• データセット全体を確認する

library(fivethirtyeight)
print(college_all_ages)

# A tibble: 173 x 11
   major_code major       major_category     total employed
        <int> <chr>       <chr>              <int>    <int>
 1       1100 General Ag… Agriculture & Na… 128148    90245
 2       1101 Agricultur… Agriculture & Na…  95326    76865
 3       1102 Agricultur… Agriculture & Na…  33955    26321
 4       1103 Animal Sci… Agriculture & Na… 103549    81177
# ... with 163 more rows, and 6 more variables:
#   employed_fulltime_yearround <int>, unemployed <int>,
#   unemployment_rate <dbl>, p25th <dbl>, median <dbl>,
#   p75th <dbl>