Question

Calculate mide from the following data .size 10-15,15-20,20-25,25-30,30-35,35-40,40-45,45-50 freequency .4,8,18,30,20,10,5,2

Answer 1

ANSWER:

C.I

10_15

15_20

20_25

25_30

30_35

35_40

40_45

45_50

F

4

8

18

30

20

10

5

2

let

f0=18,f1=30,f2=20,L= 25,h=5

mode=L+(f1-f0),/2*f1-f0-f2*h

=25+(30-18)/2*30-18-20*5

= 25+ 2/22*5

= 25+ 10/22

=25+0.454545454545

= 25.454545454545