Question

determine the model class of following frequency distribution class 0-10 10-20 30-40 40-50 frequency 5, 10,12,7,10​

Answer 1

Answer:

from the table largest frequency is 17 which is the frequency of class 30-40

the class having highest frequency is modal class

Step-by-step explanation:

hence the answer is 30-40

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Answer 2

Answer:

x f. cf

0-10. 5. 5

10-20. 10. 15

20-30. 12. 27

30-40. 7. 34

40-60. 10. 44

f -44

now N+1÷4

44+1/4

11.25

l _ 15

Mode _highest frequency - 12

f1 =12

f2 = 7;

f0 = 10

i = 10

l = 10

Mode = l +h (f0 - f1/ 2fo - f1 - f2)

= 10 + 10 ( 10-12/2×10-10-7)

= 20 ( 10-12/3)

= 20×. (-0.6)

= - 12