Chapter 15 Statistics Practice Set 55 Solutions

The height of 30 children in a class is given in centimeters. Draw up a frequency table of this data. 131, 135, 140, 138, 132, 133, 135, 133, 134, 135, 132, 133, 140, 139, 132, 131, 134, 133, 140, 140, 139, 136, 137, 136, 139, 137, 133, 134, 131, 140

In a certain colony, there are 50 families. The number of people in every family is given below. Draw up the frequency table. 5, 4, 5, 4, 5, 3, 3, 3, 4, 3, 4, 2, 3, 4, 2, 2, 2, 2, 4, 5, 1, 3, 2, 4, 5, 3, 3, 2, 4, 4, 2, 3, 4, 3, 4, 2, 3, 4, 5, 3, 2, 3, 2, 3, 4, 5, 3, 2, 3, 2

A dice was cast 40 times and each score noted is given below. Draw up a frequency table for this data. 3, 2, 5, 6, 4, 2, 3, 1, 6, 6, 2, 3, 5, 3, 5, 3, 4, 2, 4, 5, 4, 2, 6, 3, 3, 2, 4, 3, 3, 4, 1, 4, 3, 3, 2, 2, 5, 3, 3, 4.

The number of chapatis that 30 children in a hostel need at every meal is given below. Make a frequency table for these scores. 3, 2, 2, 3, 4, 5, 4, 3, 4, 5, 2, 3, 4, 3, 2, 5, 4, 4, 4, 3, 3, 2, 2, 2, 3, 4, 3, 2, 3, 2.

Make groups of 10 children in your class. Find the average height of the children in each group. (Textbook pg. no. 96)

With the help of your class teacher, note the daily attendance for a week and find the average attendance. (Textbook pg. no. 96)