Question

A survey was conducted by a group of students as a part of their environment awareness programme, in which they collected the following data regarding the number of plants in 20 houses in a locality. Find the mean number of plants per house.Which method did you use for finding the mean, and why?

Answer 1

`x_i = 1,3,5,7,9,11,13`
`f_i = 1,2,1,5,6,2,3`
`f_ix_i= 1, 6,5,35,54,22,39`
`sum f_i = 20`
`sum f_ix_i= 162`
mean`= (sum f_ix_i)/(sum f_i)`
`=162/20=8.1`
answer