Question

The mean of the number is 20 and the mean of other four number is 26. Find the mean of all numbers.​

Answer 1

Answer:

Hey friend,

I think you wanted to ask,

The mean of ten number is 20 and the mean of other four number is 26. Find the mean of all numbers.

Sum of observations =mean×number of observations.

=>sum of ten numbers=20×10=200

=>sum of other four observations =26×4=104

=>total sum of all numbers=200+104=304

=>total number of observations =10+4=14

=>mean of all numbers

= sum of observations /number of observations

=304/14=21.71

Step-by-step explanation:

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