# NCERT Solutions for Class 8 Maths Exercise 5.1 ## myCBSEguide App

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NCERT solutions for Class 8 Maths Data Handling ## NCERT Solutions for Class 8 Maths Data Handling

###### 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 cassettes produced by 5 companies.

(d) The number of passengers boarding trains from 7.00 a.m. to 7.00 p.m. at a station.

Give reason for each.

Ans. Since, Histogram is a graphical representation of data, if data represented in manner of class-interval.

Therefore, for case (b) and (d), we would use a histogram to show the data, because in these cases, data can be divided into class-intervals.

In case (b), a group of competitions having different heights in an athletics meet.

In case (d), the number of passengers boarding trains in an interval of one hour at a station.

NCERT Solutions for Class 8 Maths Exercise 5.1

###### 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 WW G B W W M G G M M W WWW G B M W B G G M W W M M W WW M W B W G M W WWW G W M M 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.

Ans. The frequency distribution table is as follows: The illustration of data by bar-graph is as follows: NCERT Solutions for Class 8 Maths Exercise 5.1

###### 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.

Ans. The representation of data by frequency distribution table using tally marks is as follows: NCERT Solutions for Class 8 Maths Exercise 5.1

###### 4. Draw a histogram for the frequency table made for the data in Question 3 and answer the following questions.

(i) How many workers earn  850 and more?

(ii) How many workers earn less than  850?

Ans. 830 – 840 group has the maximum number of workers.

(i) 10 workers can earn more than  850.

(ii) 20 workers earn less than ` 850. NCERT Solutions for Class 8 Maths Exercise 5.1

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

We draw the histogram for above frequency table: (i) For how many hours did the maximum number of students watch T.V.?

(ii) How many students watched TV for less than 4 hours?

(iii) How many students spent more than 5 hours in watching TV?

Ans. (i) The maximum number of students watched T.V. for 4 – 5 hours.

(ii) 34 students watched T.V. for less than 4 hours.

(iii) 14 students spent more than 5 hours in watching T.V.

## NCERT Solutions for Class 8 Maths Exercise 5.1

NCERT Solutions Class 8 Mathematics PDF (Download) Free from myCBSEguide app and myCBSEguide website. Ncert solution class 8 Mathematics includes text book solutions from Class 8 Maths Book . NCERT Solutions for CBSE Class 8 Maths have total 16 chapters. 8 Maths NCERT Solutions in PDF for free Download on our website. Ncert class 8 solutions PDF and Maths ncert class 8 PDF solutions with latest modifications and as per the latest CBSE syllabus are only available in myCBSEguide.

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1. nice its useful