Calculate the arithmetic mean of the following distribution

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

Problem

Calculate the arithmetic mean of the following distribution. Class interval: 0–20, 20–40, 40–60, 60–80 Frequency: 5, 7, 10, 8 (a) 5454 (b) 4040 (c) 4444 (d) 4646

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