Q. 114.0( 10 Votes )

# Let us find the m

Answer :

To find median of data, we need to make a table calculating cumulative frequency. For median:

We have, total frequency, N = 50

N/2 = 50/2 = 25

Observe, cf = 26 is just greater than 25.

Thus, median class = 15 – 20

Median is given by Where,

L = Lower class limit of median class = 15

N/2 = 25

cf = cumulative frequency of the class preceding median class = 11

f = frequency of the median class = 15

h = class interval of the median class = 5

Substituting these values in the formula of median, we get  Median = 15 + 9.33

Median = 24.33

Thus, the median of data is 24.33.

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