Mathematics · Statistics

The table given below shows the number of students having obtained different marks: Marks Number of Students 9 – 11 6 11 – 13 5 13 – 15 2 15 – 17 2 17 – 19 5 What is the mean marks per student?

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13.5

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The table given below shows the number of students having obtained different marks: Marks Number of Students 9 &ndash; 11 6 11 &ndash; 13 5 13 &ndash; 15 2 15 &ndash; 17 2 17 &ndash; 19 5 What is the mean marks per student?