Mean of 20 observations is 22. And mean of first 10 observations is 15 and mean of last 10 observations is 24. Find the 10th observations
Answers
Answered by
2
sum of 20 observation= 22*20=440
sum of first ten observation =15*10=150
sum of last ten number =440-150=290
mean of last ten number= 290/29=29
Similar questions