Question

1.
The class intervals of a frequency of distribution are 1-10, 11-20, 21 - 30, 31 – 40, 41-50. The size of the class intervals is
5
9

10
11​

Answer 1

Answer:

size of class Interval is 10

as the given class intervals are inclusive class intervals

Step-by-step explanation:

in inclusive class intervals size of class Interval is.

=upper boundary of next class - upper class of present class

now from 1st class Interval class size = 30- 20

=10

therefore class size is equal to 10