Multiple choice

The table below shows the number of students in 5 different classes: Class A B C D E No. of Students 42 36 48 54 30 What is the average number of students per class?

  1. 40

  2. 42

  3. 44

  4. 45
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

To find the average, sum the number of students in all classes (42 + 36 + 48 + 54 + 30 = 210) and divide by the number of classes (5). 210 / 5 = 42.

AI explanation

Using the formula for the average, the sum of the observations is divided by the number of observations. The sum of the students is 42 + 36 + 48 + 54 + 30 = 210. Dividing this total by the 5 classes gives an average of 210 / 5 = 42 students per class.

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