Question

Find the modal value of the following series
Х frequency
0-5
18
5-10
10
10-15
15
15-20
30
20-25
20
25-30
10
30-35
5

Answer 1

Answer:

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Answer 2

Explanation:

Modal class => 15 - 20

f = 30

L = 15

c = 5

f1 = 15 & f2 = 20

$mode \: = 25 + \frac{30 - 15}{60 - 15 - 20} \times 5 \\ = 25 + \frac{15}{25} \times 5 \\ = 25 + 3 = 28 \\ \\ mode \: \: = \: \: 28$