R s aggarwal solutions mathematics class 8 Solutions for Chapter 20 data handling

The number of members in 20 families are given below:

4,6,5,5,4,6,3,3,5,5,3,5,4,4,6,7,3,5,5,7

A dice was thrown 30 times and the following outcomes were noted:

2,1,2,4,6,1,2,3,6,5,4,4,3,1,1,3,1,1,5,6,6,2,2,3,4,2,5,5,6,4

Prepare a frequency table.

The marks obtained by 40 students of a class in an examination are given

below:

8, 47, 22, 31, 17, 13, 38, 26, 3, 34, 29, 11, 22, 7, 15, 24, 38, 31, 21, 35, 42, 24, 45,

23, 21, 27, 29, 49, 25, 48, 21, 15, 18, 27, 19, 45, 14, 34, 37, 34.

Prepare a frequency distribution table with equal class intervals, starting

from 0-10 (where 10 is not included).

The electricity bills (in rupees) of 25 houses of a certain locality for a month

are given below:

324, 700, 617, 400, 356, 365, 435, 506, 548, 736, 780, 378, 570, 685, 312, 630,

584, 674, 754, 776, 596, 745, 565, 763, 472.

Arrange the above data in increasing order and form a frequency table using

equal class intervals, starting from 300-400, where 400 is not included.

The weekly wages (in rupees) of 28 workers of a factory are given below:

668, 610, 642, 658, 668, 620, 719, 720, 700, 690, 710, 642, 672, 654, 692, 706,

718, 702, 704, 678, 615, 640, 680, 716, 705, 615, 636, 656.

Construct a frequency table with equal class intervals, taking the first of the

class intervals as 610-630, where 630 is not included.

The top speeds of 30 different land animals have been organized into a frequency table is given below:

Draw a histogram for the given data.

The ages (in years) of 360 patients treated in a hospital on a particular day are

given below:

Draw a histogram for the frequency distribution of the following data:

Hint: Take 1 small division= 10

Draw a histogram for the frequency distribution of the following data:

Draw a histogram for the following data:

Hint: Take 1 small division= 3