Question

The mean of eight variates is 10. If seven of them are 6,6,8,10,10,8,7.find the 8 th variable​

Answer 1

Answer:let the 8th variable is n

given, mean=10

the sum of variables/number of variates=mean

6+6+8+10+10+8+7+n/8=10

55+n/8=10

n=80-55

n=25

therefore,the 8th variable is 25

Answer 2

Answer:

refers to the attachment