Question

please answer this step by step​

Answer 1

For calculating mode

Formula is

Mode = L× [f1-f0 ÷ 2f1-f0-f2] ×h

Now we have to know the values of L, f1,f0,f2,h

Aaj frequencies are given and maximum frequency is 20 so

class 20-25 becomes modal class

So, frequency

20 is f0

7 is f1

and

8 is f2

L is lower limit

and it is 20 because of

modal class

h is width

and h = 5

so substituting values in formula

mode = L× [f1-f0 ÷ 2f1-f0-f2] ×h

mode = 20×[ 7-20÷2×7-20-8]×5

mode = 20×[-13÷14-20-8]×5

mode = 20×[-13÷ -14]× 5

Hope!! it helps

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