Question

If the mean of the following distribution is 6, then find the value of a. Xi 2, 4, 6, 10, a+5 fi 3, 2 , 3 ,1, 2

Answer 1

Answer:7

Step-by-step explanation:mean=fixi/fi

Given,

Mean=6,fixi=42+2a+10,fi=11

Mean=fixi÷fi

6=42+2a+10/11

66=42+2a+10

66-42=2a+10

24=2a+10

24-10=2a

14=2a

a=14/2

a=7

Therefore a=7