Question

what is the class mark of 25 - 35

Answer 1

Upper limit (u) = 35

Lower limit (l) = 25

Class Mark = ( u + l) / 2

= ( 35 + 25) / 2

= 60 / 2

= 30

Answer 2

Answer:

Class Mark of 25 - 35 is 30.

Step-by-step explanation:

Given Class Interval = 25 - 35

To find: Class mark

Class mark is the average of the limits of the class interval.

$\implies\,Class\:Mark=\frac{Upper\:limit+Lower\:limit}{2}$

Here, Upper limit = 35   and Lower Limit = 25

$\implies\,Class\:Mark\:of\:25-35=\frac{35+25}{2}=\frac{60}{2}=30$

Therefore, Class Mark of 25 - 35 is 30.