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Question-1

Present the following data by histograms.
 

Daily wages (in `)

No. of workers

22.50

6

27.50

9

32.50

13

37.50

7

42.50

9

47.50

5

52.50

3

Total

52


Solution:
The difference between two class marks is

x = 27.50 - 22.50 = 5.00

The value of == 2.50

Lower and upper limits for 22.50 will be

22.50 - 2.50 = 20.00 and 22.50 + 2.50 = 25.00

... First class interval 20.00 - 25.00

Similarly we can calculate other class intervals,

 

Daily wages

20-25

25-30

30-35

35-40

40-45

45-50

50-55

No. of workers

6

9

13

7

9

5

3


The histogram of the above table is:
  




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