Question

Kl. Find the frequency of classes 10-15 and 15-20 for
the following data set.
2, 5, 15, 25, 20, 12, 8, 7, 6, 16, 21, 17, 30, 32, 23, 40,
51, 15, 2, 9, 57, 19, 25​

Answer 1

Answer:

The frequency of class 10-15 is 1 and class 15-20 is 5.

Step-by-step explanation:

The given data set is:

2,5,15,25,20,12,8,7,6,16,21,17,30,32,23,40,51,15,2,9,57,19,25

The data set can be divided into classes:

Class:

0-5 has 2,2

5-10 has 5,8,7,6,9

10-15 has 12

15-20 has 15,16,17,15,19

20-25 has 20,21,23

25-30 has 25

30-35 has 30,32

35-40 has no numbers

40-45 has 40

45-50 has no numbers

50-55 has 51,57

The class 10-15 has only one number thus it's frequency is 1

The class 15-20 has 5 numbers thus it's frequency is 5.