Question

calculate the mode from He Fellains table
Size Frequency
O-10
5
10-20
201-30
19
30-40
18
40-50
so-Go 10
Go-70
5
use the formula 2 = 114 fx i
2
Fott​

Answer 1

Answer:

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Class 10

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>>Mode of Grouped Data

>>Find the mode of the following data.Clas

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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

Solution

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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

Explanation:

hope this is help full for you