RD Sharma Solutions Class 6 Data Handling Pictographs Exercise 22.2

RD Sharma Solutions Class 6 Chapter 22 Exercise 22.2

RD Sharma Class 6 Solutions Chapter 22 Ex 22.2 PDF Download

Exercise 22.2

1. The following are the details or the number of students in a class of 30 students presents a week.

Day

Number of students present

Monday

24

Tuesday

20

Wednesday

28

Thursday

30

Friday

26

Saturday

22

Represent the above data by a pictograph.

Soln:

Let an icon of a student represent 4 students. Then, the number of icons for each day is as follows:

Day

Number of students present

Monday

24 / 4 = 6

Tuesday

20 / 4 = 5

Wednesday

28 / 4 = 7
Thursday

30 / 4 = 7.5

Friday

26 / 4 = 6.5
Saturday

22 / 4 = 5.5

The pictograph representing the above data is as follows:

21.JPG

2. Total number of students of a school in different years is shown in the following table:

Year

Number of students
1996

400

1998

550
2000

450

2002

600
2006

650

Represent the above data by a pictograph.

(a) Prepare a pictograph of students using one symbol an icon of a student to represent students and answer the following questions:

(i) How many symbols represent total number of students in the year 2002?

(ii) How many symbols represent total number of students for the year 1998?

(b) Prepare another pictograph of students using any other symbol each represents students. Which pictograph do you find more informative?

Soln:

(a) Let one icon represent 100 students.

Then, the numbers of icons for different years are as follows:

Year Number of students
1996 400 / 100 = 4
1998 550 / 100 = 5.5
2000 450 / 100 = 4.5
2002 600 / 100 = 6
2006 650 / 100 = 6.5

The pictograph representing the above data is as follows:

22.JPG

(i) 6 icons represent the total number of students in the year 2002.

(ii) 5 and half icons represent the total number of students in the year 1998.

(b) Let one icon represent 50 students.

Then, the numbers of icons for different years are as follows:

Year Number of students
1996 400 / 50 = 8
1998 550 / 50 = 11
2000 450 / 50 = 9
2002 600 / 50 = 12
2006 650 / 50 = 13

23.JPG

The second pictograph is more informative.

Explanation: in the second pictograph, every icon is complete, therefore more convenient to understand.