Page 195 - Maths Skills - 8

Data Handling 193

4. Study the following frequency distribution table and answer the questions given below.
Frequency Distribution of Daily Income of 550 workers of a factory

Class Interval Frequency
(Daily Income in Rupees) (Number of workers)
100–125 45
(i) Which class interval has the lowest
125–150 25 frequency?

150–175 55 (ii) What is the upper limit of the class interval

175–200 125 175–200?
(iii) Which two class intervals have the same
200–225 140 frequency?

225–250 55 (iv) What is the class size of each class interval?

250–275 35 (v) What is the class mark of the sixth class
interval?
275–300 50
300–325 20

Total = 550

BAR GRAPH

A bar graph is a pictorial representation of numerical data using bars of different heights.

Features of Bar Graph
Its features include:
1. Rectangular bars are drawn on one axis 3. The bars are equally distanced from each other.
depicting the variables. 4. Height of the bar is dependent on the value
2. The value of those variables is shown on of the variable.
the other axis. 5. The width of the bars should be uniform.

Let’s Attempt

Example: The following table gives the data about the number of hours spent on various activities by Rajesh
in a day:

Number of hours Spent on Various Activities
Activities Number of hours spent

Study 5
TV watching 2

Using gadgets 3
Sleeping 8

Others 6

Draw a bar graph to represent this data.