Question

Can you explain what class marks and class size are...what are upper limit and lower limit. And how to find them??

Answer 1

Step-by-step explanation:

class mark means -- the sum of classes divided by 2.

lower class limit means-- the first no.in classes( eg.10-20 , 21-30 lower class limit is 10 and 21 and upper class limit is 20 and 30)