Group numerical data into class intervals

Here are the values of the number of pages in novels borrowed from a library, for a sample of 26: 140, 219, 195, 221, 202, 196, 153, 217, 196, 182, 151, 124, 103, 118, 128, 112, 132, 218, 157, 200, 189, 202, 123, 163, 145, 216

All listed values are whole numbers. Each interval includes both written endpoints; the next whole number starts the next interval

Use class intervals of width 25, starting at 100: 100–124, 125–149, 150–174, 175–199, 200–224