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The bar chart shows the distribution of marks i... - JAMB Mathematics 1993 Question

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
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Correct Option: B

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

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