The time taken by 70 students to solve a puzzle is recorded in the following table. Find the median class.
|
Time (in minutes) |
0-5 | 5-10 | 10-15 | 15-20 | 20-25 | 25-30 | 30-35 |
| No. of students | 13 | 5 | 18 | 24 | 8 | 1 | 1 |
Answer & explanation
Correct answer: option 2
To find the median class:
First add the total number of frequencies.
Here, f=70
=(Total number of frequency/)2
=(70)/2 = 35
Hence, the value 35 lies in the class interval 10-15 from the cummulative frequency table.
The correct answer is option (2) : 10-15