Question

The width of each of five continuous classes in a frequency distribution is $5$ and the lower class-limit of the lowest class is $10$ The upper class-limit of the highest class is:

• A. $15$
• B. $25$
• C. $35$
• D. $40$

Answer 1

The correct option is C

$35$

From the given data

width of each five consecutive classes $=5$

the lower limit of lowest class $=10$

So, class intervals can be written as

$$\begin{gathered} \text{10-15} \\ 15-20 \\ 20-25 \\ 25-30 \\ 30-35 \end{gathered}$$

Hence, we get upper limit of highest class $=35$

Therefore option(C) is the correct answer and all other options are incorrect answers .