The bar chart shows the distribution of marks in a class test. How many students took the test?
-
A.
15 -
B.
20 -
C.
25 -
D.
30
Correct Answer: Option 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