Q. 94.8( 11 Votes )
Let us find the m
To find median of heights of students, we need to make a table calculating cumulative frequency.
We have, total frequency, N = 100
N/2 = 100/2 = 50
Observe, cf = 57 is just greater than 50.
Thus, median class = 150 – 155
Median is given by
L = Lower class limit of median class = 150
N/2 = 50
cf = cumulative frequency of the class preceding median class = 35
f = frequency of the median class = 22
h = class interval of the median class = 5
Substituting these values in the formula of median, we get
⇒ Median = 150 + 3.409
⇒ Median = 153.409
Thus, the median of heights of students is 153.409 cm.
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