Question

Q3) The class marks of a class is 12 and its size is 10 . The lower limit of the class is

Answer 1

Answer:

Here we will learn class mark.

The class mark of a class interval = Actual lower limit + Actual Upper Limit2

= Sum of Class Boundaries2

For Example:

The class mark of the overlapping class interval 10 – 20

= 10+202

= 15.

The class mark of the overlapping class interval 11 – 20 (when the intervals are 1 – 10, 11 – 20, 21 – 30, etc.)

= 10.5+20.52

= 15.5

Answer 2

Answer:

15 is wrong answer 13 is write answer