Question

If the mean of 10 observation is 20.if 5 is subtracted from every observation.what will be the new mean.

Answer 1

Step-by-step explanation:

Mean=20

Total numbers=10

Total sum=200

If 5 is decreased from all numbers

mean subtracting (10×5) from 200 make total sum=200−50=150

New Mean= 150/10= 15

Hence New Mean =15

Answer 2

Answer:

please support the above answer