Page 2 - Home assignment on mean

15 20 25 30 35 35
F 04 05 03 02 06 07 03

11. Find out mean from the following data . 3
X 7.5 12.5 17.5 22.5 27.5 32.5 37.5
F 04 05 03 02 06 07 03

12. The average weight of group of 25 boys was calculated 3
to be 52kg.It was later discovered that one weight was
misread as 45kg instead 54kg . Calculate the correct

average .

13. The mean wage of 100 workers is Rs 284. The mean 4
wage of 70 workers is Rs 290 . Find the mean wage of
remaining 30 workers .