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
in a locality. find the mean number of plants per house. number of plants:0_2,2_4,4_6,6_8,8_10,10_12,12_14 number of houses :1,2,1,5,6,2,3

Answer 1

mean of plants = 0,1,2,2,3,4,4,5,6,6,7,8,8,9,10,10,11,12,12,13,14,
=0+1+2+2+3+4+4+5+6+6+7+8+8+9+10+10+11+12+12+13+14/21
=147/21=7
so, 7 is the mean.