To avoid any overlaps, the next class interval would be 10 ≤ x < 20. Any pieces of data which are greater than or equal to 10 but less than 20 fall in this interval.

The data can be counted into the table using tallies. Each piece of data is put into the correct class interval, so 14 is counted in the 10–14 class interval.

Add-drop period ended this past Tuesday, and while some students may still drop classes before week 10, enrollment numbers are now more stable. The Daily Princetonian collected data from the Office of ...