Question

how to find out the class marks​

Answer 1

Answer:

what do you mean how to find what? huh?

Answer 2

Step-by-step explanation:

Find the midpoint for class limits of 180 & 199. The average of the class limits is (180 + 199) / 2 = 189.5. This is your midpoint. You might see the class mark defined as the average of the class boundaries as well