Question

the mean of 8 numbers is 42 if one number is 63 then the mean of the remaining number is what
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Answer 1

Step-by-step explanation:

Given :-

The mean of 8 numbers is 42.One of the numbers is 63

To find :-

Find the mean of the remaining numbers?

Solution :-

Given that

The mean of 8 numbers = 42

We know that

Mean = Sum of all observations/Number of all observations

=> Sum of 8 numbers / 8 = 42

=> Sum of 8 numbers = 42×8

=> Sum of 8 numbers = 336

Now,

One of the numbers = 63

Sum of the remaining numbers

=> 336-63

=> 273

Sum of the remaining numbers = 273

Remaining numbers = 8-1 = 7

Mean of the remaining numbers

= Sum of remaining numbers / 7

=> 273/7

=> 39

Mean = 39

Answer:-

The mean of remaining numbers for the given problem is 39

Used formulae:-

→ Mean = Sum of all observations/Number of all observations