Question

Find the class-mark of the class $35-40$.

Answer 1

Given that class is $35-40$

Here

Upper class limit is $40$

lower class limit is $35$

Class mark it is also called class mid point

$\therefore$ class mark $=\frac{upperlimit+lowerlimit}{2}$

$=\frac{40+35}{2}$

$=\frac{75}{2}$

Class mark $=37.5$