Question

Mean of following data 6 then which of the following can be the value of a?2 4 6 8 10 1 2 a 2 1

Answer 1

hey mate here is your answer..
mean = sum of all observation÷ no. of observ.
6 = 2+4+6+8+10+12+a+21÷8
48= 43+a
5 = a.......
hope it will help you my dear friend....¥¥