Math, asked by anishsingla50, 4 months ago

The mean of 12 observations is 15,if 4 is added to each observation then new mean is​

Answers

Answered by Anonymous
44

Given :-

The mean of 12 observation is 15

Solution :-

Given mean of 12 observations is 15

Therefore,

The sum 12 of observations = 12 * 15 = 180

Now,

If each observation is added by 4

Then ,

The no. of observation is added by 4

= 12 * 4 = 48

Now ,

The sum of observation added by 48

180 + 48 = 228

Now,

The mean of the new observation

= 228/ 12 = 19

Hence, The mean of the new observation is 19 .


Anonymous: Perfect Answer . Keep it up .
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