Question

Class Interval
Frequency
15-20
10
20-25
30
25-30
50
30-35
50
35-40
30
40-45
6
45-50
4
the class size​

Answer 1

Answer:

Class Interval

Frequency

15-20

10

20-25

30

25-30

50

30-35

50

35-40

30

40-45

6

45-50

4

the class size​

Answer:

 

Step-by-step explanation:

 

▲

Step-by-step explanation:

Answer 2

Answer:

5

Step-by-step explanation:

In the given question

the class interval is uniform

therefore the class size = upper class value(UCV) - lower class value(LCV)

=20-15

=5