please find the medien for this
Answers
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Step-by-step explanation:
Class Interval Frequency C.F
5 - 10 2 2
10 - 15 12 14
15 - 20 2 16
20 - 25 4 20
25 - 30 3 23
30 - 35 4 27
35 - 40 3 30.
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30.
Here,
n = 30 and hence n/2 = 15.
So, median class is 15 - 20 with cumulative frequency = 16.
l = 15, n = 30, cf = 14, f = 2 and h = 5.
Now,
Let x = (n/2 - cf)
= (15 - 14)
= 1.
∴ Median = l + (x/f) * h
= 15 + (1/2) * 5
= 15 + 5/2
= 35/2
= 17.5
Therefore, median = 17.5
Hope it helps!