Question

if the mean of 3, 7,11,and xis 9,what is the value of x​

Answer 1

Answer:

If the mean of 3,7,11 and x is 9

Step-by-step explanation:

Find the mean (arithmetic) of following frequency distribution ...

Answer 2

Answer: The value of x is 15

Step-by-step explanation:

Given, arithmetic mean =9

We have to find out the x value using the formula,

A.M. =Sum/Number

(Here number=4)

A.M. = ( 3+7+11+x)/4

9=(21+x)/4

x=36-21

x=15

Hence, We get the value of x is 15