Question

calculate the model class and determine the value of mode by any suitable method marks more than 0 10 20 30 40 50 number of students 40 35 32 20 10 5​

Answer 1

Answer:

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−f2f1−f0 ]×h

Mod =30+[ 2×20−12−1120−12]×10=30+ 178

×10=30+4.705=34.705

Explanation:

hope it helped out