Question

what is the formula of class size

Answer 1

Class size is the difference between two consecutive lower class limits

or Class size is the difference between true upper limit and true lower limit

Class Size:

Also called class width

Class size is the difference between two consecutive lower class limits

or Class size is the difference between true upper limit and true lower limit

True upper limit and true lower limit  are also called class boundaries

For Inclusive Class Interval

True upper limit and true lower limit  are different from Upper limit and Lower limit

True upper limit is  Mean of upper limit of class and lower limit of next class.

For example

1 - 4

5 - 8

9 - 13

Here Class size is   5 - 1 =  9 - 5 = 4   using  difference between two consecutive lower class limits

Or changing in True upper and lower limits

0.5 - 4.5

4.5 - 8.5

8.5 - 13.5

Class size =  4.5 - 0.5 = 8.5 - 4.5 = 4

Using the difference between true upper limit and true lower limit

For Exclusive Class Interval

True upper limit and true lower limit  are same as Upper limit and Lower limit

1 - 4

4 - 7

7 - 10

Class size is   4- 1 = 7 - 4 = 3

Class size is the difference between two consecutive lower class limits

or Class size is the difference between true upper limit and true lower limit

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Answer 2

Answer:

Class size: The difference between a specific class interval's real upper and lower limits.

Step-by-step explanation:

The number of students in a class or classroom is referred to as class size.

(1) In a course or classroom, the number of students taught by a single teacher.

(2) In a school, district, or education system, the average number of students taught by teachers.

The difference between a specific class interval's real upper and lower limits.

In a frequency distribution, the difference between the top and lower limits of a class is referred to as class size. The class size for the class interval $10-20$ is $10$

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