Question

Marks :	Below 10	Below 20	Below 30	Below 40	Below 50
Number of Students :	3	12	27	57	75

For the above distribution, the modal class is :

• A. 45585
• B. 20-30
• C. 30-40
• D. 40-50

Answer 1

The Correct Option is C

The frequency table is obtained as follows: \[ \begin{array}{|c|c|} \hline \text{Class Interval (Marks)} & \text{Frequency (Number of Students)} \\ \hline 0 - 10 & 3 \\ 10 - 20 & 9 \\ 20 - 30 & 15 \\ 30 - 40 & 30 \\ 40 - 50 & 18 \\ \hline \end{array} \] The modal class is the class with the highest frequency. From the table, the highest frequency is 30, corresponding to the class interval $30 - 40$.