The cumulative frequencies for a set of test marks are given below

MATHEMATICS · Subjective · CBSE · Mathematics · Statistics · Statistics

Problem

The cumulative frequencies for a set of test marks are given below. Class (marks): 30–40, 40–50, 50–60, 60–70 Cumulative frequency: 7, 18, 30, 40 Calculate the mean mark of the students.

Related theory

Measures of Center
Statistics
Mean of grouped data

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