The bar chart shows the distribution of marks in a class test. How many students took the test?
- 15
-
20
- 25
- 30
The correct answer is: B
Explanation
Number f students that took the test = \(\sum f\). Where f is the frequencies
= 2 + 5 + 0 + 3 + 4 + 0 + 0 + 2 + 3 + 1 + 2 = 20