Q. 84.5( 11 Votes )
The frequency dis
To find median of tiffin allowance, we need to make a table calculating cumulative frequency.
We have, total frequency, N = 40
N/2 = 40/2 = 20
Observe, cf = 23 is just greater than 20.
Thus, median class = 50 – 55
Median is given by
L = Lower class limit of median class = 50
N/2 = 20
cf = cumulative frequency of the class preceding median class = 14
f = frequency of the median class = 9
h = class interval of the median class = 5
Substituting these values in the formula of median, we get
⇒ Median = 50 + 3.33
⇒ Median = 53.33
Thus, the median of tiffin allowance is Rs. 53.33.
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