A frequency distribution has the classes 30–40, 40–50, 50–60

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

Problem

A frequency distribution has the classes 30–40, 40–50, 50–60, and 60 & above. To plot a ‘less than’ ogive with a common class width of 10, what upper class boundary should be used for the last open-ended class? (a) 69.569.5 (b) 6060 (c) 7070 (d) 6565

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