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

Image of Draw a Figure for Data Handling with Table

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 marks for Data Handling

Given Table Make a Frequency Distribution

Table of make a frequency distribution table using tally marks for Data Handling

The bar-graph of illustration data are as follows:

Showing bar graph of frequency distribution of shoppers

Bar Graph of Frequency Distribution of Shoppers

Showing bar graph of frequency distribution of shoppers

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 using tally marks

Frequency Table Using Tally Marks

Table of representation of data by frequency distribution using tally marks

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