NCERT Class 8 Mathematics Solutions: Chapter 5 –Data Handling Exercise 5.1 Part 1

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Image of Draw a Figure for Data Handling with Table

Image of Draw a Figure for Data Handling

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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 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.

Answer:

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

Therefore, for case (a) and (c), 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 athletics meet.

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

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.

Make a frequency distribution table using tally marks. Draw a bar graph to illustrate it.

Answer:

Table of make a frequency distribution table using tally mar …

Given Table Make a Frequency Distribution

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The bar-graph of illustration data are as follows:

Showing bar graph of frequency distribution of shoppers

Bar Graph of Frequency Distribution of Shoppers

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Question: 3 The weekly wages of 30 workers in a factory are:

Using tally marks, make a frequency table with intervals as and so on.

Answer:

The representation of data by frequency distribution table using tally marks is as follows

Table of representation of data by frequency distribution us …

Frequency Table Using Tally Marks

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