Question

The class marks of distribution are 6,10,14,18,22,26,30. Find the class size and class interval

Answer 1

Answer:

The class size is 4.

The class interval are:

4-8

8-12

12-16

16-20

20-24

24-28

28-32

Step-by-step explanation:

we observe that 10-6=4,14-10=4

.....so on

the difference between the value of two consecutive class marks is 4therefore we subtract 4/2=2 from each Class mark to get the lower limit of corresponding class interval and add 5 to each class mark to get the upper limit .