The numbers of hours each student of a class spends for studying are 5, 8, 7, 6, 8, 8, 5, 5, 6, 5, 6, and 5. Which of the following histogram represents the data correctly?
From the data,
The number of students who study for 4 - 5 hours is 5.
The number of students who study for 6 - 7 hours is 4.
The number of students who study for 8 - 9 hours is 3.
The histogram of option (a) has bars of heights 5, 4 and 3.