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From the following choices, the sum of lower limits of the median class and modal class for the data given below is:

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15

25

30

35

answer is B.

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Detailed Solution

It is given a table with class and frequency.
Observe the table and find the cumulative frequency for the table.
Question Image

The sum of the frequency is 66.
Since the value is even, the median value is,

N 2 = 662

= 33

The median value lies in the interval

10 − 15

.
So, the lower limit of the median class is

10

.
The highest frequency is

20

which lies in the interval

15 − 20

.
So, the lower limit of modal class is

15

.
Lower limit of median class

+

Lower limit of modal class

= 10 + 15

= 25

Hence, the value is

25

.
Hence, option 2) is correct.

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