Math, asked by vasanthis796, 11 months ago

find the mean of the following distribution . class=0-20, 20-40,40-60,60-80,80-100,100-120,120-140. frequency=12,18,15,25,26,15,9

Answers

Answered by sangitakothari9881

2

=17.12

Step-by-step explanation:

12+18+15+25+26+15+9/7

=120/7

=17.12

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