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Differential Calculus> The mean of 12 observation is 39.7.If eac...

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The mean of 12 observation is 39.7.If each observation is divided by 3 and 15 is added then find new mean

Mugisha Pirzada , 5 Years ago

Grade 12th pass

2 Answers

Arun

Last Activity: 5 Years ago

Dear student

The changes which you make in every term, the same changes occur in mean.

Hence new mean = (39.7 /3) + 15

= 13.233 + 15

= 28.233..

Vikas TU

Last Activity: 5 Years ago

Dear student

The above process is incorrect

Mean = 39.7

Sum = 39.7 *12 = 476.4

476.4/3 + 15 = 173.8

New mean = 173.8/12 =14.483

Good Luck

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