Question

Following are the marks of 37 students:
`{:("Marks",4,6,8,10,12,14),("No. of Students",5,7,6,8,6,5):}`
Calculate mean marks, using Short-cut Method.

Answer 1

`barX = A+(sumfd)/(sum f)`
`=10+(-38)/37`
`=10-1.03 = 8.97`
mean Marks = `8.97`.