Question

in a locality a survey for number of children in a family gives the following data ​

Answer 1

Arranging the data in ascending order we have : 1,1,1,1,1,2,2,2,2,3,3,3,4,4,5. To count, we can use tally marks. We record tally mark in bunches of five, the one crossing the other diagonally, i.e.,