Question

Find the mood of the following distribution Class 10-13, 14- 17, 18-21,22-25,26-29, 30-33,34-37,38- 41 frequency 8,6,11,20,25,22,10,4 help me friend​

Answer 1

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Statistics

Mode of Grouped Data

Find the mode of the follow...

STATISTICS

Find the mode of the following data.

Class Interval Frequency

10-20 7

20-30 12

30-40 20

40-50 11

50-60 8

MEDIUM

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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