Question

Consider the frequency distribution table the classification of marks obtained by 40 students out of 36 marks in mathematics test.

 

Class interval	Frequency
0-6	5
6-12	6
12-18	9
18-24	12
24-30	3
30-36	5

How many students got marks between 12 to 24?
1. 9
2. 12
3. 17
4. 21

Answer 1

Correct Answer - Option 4 : 21

Concept used:

In statistics, a frequency distribution is a list, table or graph that displays the frequency of various outcomes in a sample

Calculation:

Total number of students obtained marks between 12 to 18 = 9

Total number of students obtained marks between 18 to 24 = 12

∴ Total number of students obtained marks between 12 to 24 = 9 + 12 = 21