Question

If the class intervals in a frequency distribution are $(72-73.9),(74-75.9),(76-77.9),(78-79.9),$ the mid-point of the class $(74-75.9)$ is

• A. $74.50$
• B. $74.90$
• C. $74.95$
• D. $75.00$

Answer 1

The correct option is C $74.95$

$\Rightarrow$ We have to find mi-point of class interval between $(74-75.9$

Upper class limit $=75.9$

Lower class limit $=74$

Mid-point of class $=\frac{Upperlimit+Lowerlimit}{2}$

$=\frac{75.9+74}{2}$

$=\frac{149.9}{2}$

$=74.95$