NCERT Solutions for Class 8 Maths Chapter 5 Data Handling Ex 5.1

# NCERT Solutions for Class 8 Maths Chapter 5 Data Handling Ex 5.1

## NCERT Solutions for Class 8 Maths Chapter 5 Data Handling Ex 5.1

NCERT Solutions for Class 8 Maths Chapter 5 Data Handling Ex 5.1 are the part of NCERT Solutions for Class 8 Maths. Here you can find the NCERT Solutions for Class 8 Maths Chapter 5 Data Handling Ex 5.1.

### Ex 5.1 Class 8 Maths Question 1.

For which of these would you use a histogram to show the data?
(a) The number of letters for different areas in a postman’s bag.
(b) The height of competitors in an athletics meet.
(c) The number of cassettes produced by 5 companies.
(d) The number of passengers boarding trains from 7 a.m. to 7 p.m. at a station.
Give reasons for each.

Solution:
(a) The number of areas cannot be represented in class-intervals. So, we cannot use a histogram to show the data.
(b) The height of competitors can be divided into class-intervals. So, we can use a histogram to show the data.
For example:

(c) Companies cannot be represented in class-intervals. So, we cannot use a histogram to show the data.
(d) The time for boarding the train can be divided into class-intervals. So, we can use a histogram to show the data.
For example:

### Ex 5.1 Class 8 Maths Question 2.

The shoppers who come to a departmental store are marked as: man (M), woman (W), boy (B) or girl (G). The following list gives the shoppers who came during the first hour in the morning.
W W W G B W W M G G M M W W W W G B M W B G G M W W M M W W W
M W B W G M W W W W G W M M W W M W G W M G W M M B G G W
Make a frequency distribution table using tally marks. Draw a bar graph to illustrate it.

Solution:

### Ex 5.1 Class 8 Maths Question 3.

The weekly wages (in ₹) of 30 workers in a factory are:
830, 835, 890, 810, 835, 836, 869, 845, 898, 890, 820, 860, 832, 833, 855, 845, 804, 808, 812, 840, 885, 835, 835, 836, 878, 840, 868, 890, 806, 840
Using tally marks make a frequency table with intervals as 800 – 810, 810 – 820 and so on.

Solution:

### Ex 5.1 Class 8 Maths Question 4.

Draw a histogram for the frequency table made for the data in Question 3, and answer the following questions:
(i) Which group has the maximum number of workers?
(ii) How many workers earn ₹ 850 and more?
(iii) How many workers earn less than ₹ 850?

Solution:
Let us use the frequency table of Question No. 3 to draw a histogram.

(i) Group 830 – 840 has the maximum number of workers, i.e., 9.
(ii) 10 workers earn ₹ 850 and more.
(iii) 20 workers earn less than ₹ 850.

### Ex 5.1 Class 8 Maths Question 5.

The number of hours for which students of a particular class watched television during holidays is shown through the given graph.