A teacher wants to group the test scores of 45 students into classes of equal size. The lowest score is 18 and the highest is 96. If she decides on a class size of 15 and starts the first class at 15, how many class intervals will she need to cover all scores?

Question

Accepted Answer

6. Classes: 15-30, 30-45, 45-60, 60-75, 75-90, 90-105. The highest 96 lies in 90-105 (6th class) and lowest 18 in the first. So 6 intervals are needed.

A teacher wants to group the test scores of 45 students into classes of equal size. The lowest score is 18 and the highest is 96.
If she decides on a class size of 15 and starts the first class at 15, how many class intervals will she need to cover all scores?

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More Class 8 Organising Data practice

A teacher wants to group the test scores of 45 students into classes of equal size. The lowest score is 18 and the highest is 96.If she decides on a class size of 15 and starts the first class at 15, how many class intervals will she need to cover all scores?

Step-by-Step Solution

Master this chapter in 30 minutes a day.

More Class 8 Organising Data practice

A teacher wants to group the test scores of 45 students into classes of equal size. The lowest score is 18 and the highest is 96.
If she decides on a class size of 15 and starts the first class at 15, how many class intervals will she need to cover all scores?