Question

*The arithmetic mean of 2, 6, 8, 10, 12, x, is 9 Find the value of x, Also,find the range of the data.*​

Answer 1

Answer:

Arithmetic mean=Sum of observations/Number of observations

given ,

Arithmetic mean=9

sum of observations=2+6+8+10+12+x

Number of observations=6

Arithmetic mean=(2+6+8+10+12+x)/6

9=(38+x)/6

38+x=9×6

x=54-38

x=16

Therefore ,the value of x is 16.

hope it will help you.