Question

The mean of 10 number is 20 if 5 is subreacted from every number ,what will be the new mean?​

Answer 1

Answer:

sum of observation= mean× number of observation

= 20×10

= 200

now if 5 is subtracted from each number, sum =200-(10×5)

= 150

now new mean = 150/10

= 15

Step-by-step explanation:

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Answer 2

Answer:

New mean is 15

Step-by-step explanation:

No.of observations is 10,so total sum of observations is = 200-(5x10)

=150

So,New mean = 150/10

=15