Question
Mathematics Question on Statistics
| 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
30-40
Explanation
Solution
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.