Question

5 point
Q.7.- Refer to the following data set
that shows the class interval (and
frequency in parentheses): {0-5 (20);
5-10 (30); 10-15 (50); 15–20 (40); 20-
25 (10);25–30 (20) Construct a
frequency histogram, Polygon and
more than ogive using the above
data.
Add file

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

Answer 2

ans:-34.705

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