The Table given below shows the number of students having obtained different marks.
What is the mean marks per student?
Show answer & explanation
Correct answer: A
Explanation
Correct Answer is option 1 i.e. 13.5
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Application |
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Required mean = (10 × 6 + 12 × 5 + 14 × 2 + 16 × 2 + 18 × 5)/20 = (60 + 60 + 28 + 32 + 90)/20 = 270/20 = 13.5 |