Complete the following grouped frequency distribution of marks (out of 50) for 30 students

MATHEMATICS · Single correct · CBSE · Mathematics · Statistics · Statistics

Problem

Complete the following grouped frequency distribution of marks (out of 50) for 30 students. Class Interval (marks) | Frequency 0–9 | 2 10–19 | 5 20–29 | ? 30–39 | 9 40–49 | 6 Find the missing frequency. (a) 77 (b) 88 (c) 66 (d) 99

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