Question

9. Find the mode of the following frequency distribution:0-10
10-20
20-30
30-40
40-50
Class Interval 0-10 10-20
Frequency
5
12
20
9
4​

Answer 1

Answer:

Class intervals Frequency

10-20 7

20-30 12

30-40 20

40-50 11

50-60 8

Here maximum frequency is 20 ,the class corresponding to this 30-40

So modal class is 30-40

Now lower limit of modal class (l)=30

Frequency (f1) of modal class =20

frequency (f0) of preceding the modal class =12

frequency (f2) of the class succeeding the modal class=11

Class size=10

Mod=l+[

2f1−f0−f2

f1−f0

]×h

Mod =30+[

2×20−12−11

20−12

]×10=30+

17

8

×10=30+4.705=34.705

Hope it helps!

Answer 2

Step-by-step explanation:

this much only okkk byeeee