The body masses of 50 athletes were classified into equal class intervals of width 10 kg

MATHEMATICS · Multi-part · CBSE · Mathematics · Statistics · Statistics

Problem

The body masses of 50 athletes were classified into equal class intervals of width 10 kg. Only the cumulative frequencies are available, as given below.
Mass (kg)50–6060–7070–8080–9090–100
Cumulative frequency514254050
(i) Obtain the individual frequency of each class interval from the given cumulative frequencies. (ii) State the median class for the distribution. (iii) Calculate the median body mass of the athletes.

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