What is class Mark?

Hi!
The mid-value of a class interval is known as the midpoint (class mark) of that class interval.
If ab is a class interval, then the class mark x is found by using the formula
 
Cheers!

  • 20

The mid-value of a class interval, or the integral value nearest the midpoint of the interval.

ha ha

  • -14
What are you looking for?