Question
Convert the following frequency series into a simple frequency series:
6 students obtained less than 10 marks
22 students obtained less than 20 marks
30 students obtained less than 30 marks
40 students obtained less than 40 marks
50 students obtained less than 50 marks
Solution
Cumulative Frequency Series
|
Marks less than |
No. of Students |
|
10 |
6 |
|
20 |
22 |
|
30 |
30 |
|
40 |
40 |
|
30 |
50 |
Simple Frequency Distribution
|
Marks |
No. of Students |
|
0–10 |
6 |
|
10–20 |
22 – 6 = 16 |
|
20–30 |
30 – 22 = 8 |
|
30–40 |
40 – 30 = 10 |
|
40–50 |
50 – 40 = 10 |
