Math, asked by devchaudhary12567891, 10 months ago

6 Calculate mean, variance and standard deviation for
following distribution
Classes 20-30 30-40 40-50 50-60 | 60-70 70-80 80-90
frequency 3 6 13 15 14 5 4 .

Answers

Answered by dhanamvijay2002

14

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