Mon November 14, 2011 By: Prabhjeet Singh

what is class size ,class marks?

Expert Reply
Mon November 14, 2011
In statistics, class size is referred to as the width or difference between the upper and lower limits of a particular class interval. For example if age of students is counted in a college
and divided into class intervals of 15-20, 20-25 and 25-30. Then class size would be
20-15 = 5.
Class mark is the midpoint or the average of the values for a particular class interval.
For the example above, for the class interval of 15-20, the class mark would be 15+20/2 = 
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