The table shows the marks (out of 40) obtained by 20 students in a test: Marks (class…

MATHEMATICS · Subjective · CBSE · Mathematics · Statistics · Statistics

Problem

The table shows the marks (out of 40) obtained by 20 students in a test: Marks (class interval): 0–10 10–20 20–30 30–40 Number of students: 2 6 9 3 Find the mean mark of the class.

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