Q3 of 37 Page 14

What is the lower limit of the modal class of the following frequency distribution?[CBSE 2009]


Age (in years)

0 - 10

10 - 20

20 - 30

30 - 40

40 - 50

50 - 60

60 Number of patients

16

13

6

11

27

18

Here, the maximum class frequency is 27.

The class corresponding to this frequency is the modal class. ⇒ modal class = 40 - 50


∴ lower limit of the modal class (l) = 40

More from this chapter

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1

Find the class marks of classes 10 - 25 and 35 - 55. [CBSE 2008]

 2

Write the median class of the following distribution: [CBSE 2009]


Class

0 - 10

10 - 20

20 - 30

30 - 40

40 - 50

50 - 60

60 - 70

Frequency

4

4

8

10

12

8

4
4

If the mean of 5 observations x, x + 2, x + 4, x + 6 and x + 8 is 11, find the value of x.[CBSE 2014]

 5

If the mean of 25 observations is 27 and each observation is decreased by 7, what will be the new mean?[CBSE 2014]