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Question
A boy scored the following marks in various class tests during a term, each test being marked out of 20.
15, 17, 16, 7, 10, 12, 14, 16, 19, 12, 16
What is his mean marks?
Solution
Total marks scored by the boy in 11 tests
= 15 + 17 + 16 + 7 + 10 + 12 + 14 + 16 + 19 + 12 + 16
= 154
∴ Mean marks
= `(154)/(11)`
= 14.
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