The class marks in a frequency table are given to be 5, 10, 15, 20, 25, 30, 35, 40, 45, 50 The class limits of the first five classes are

Options

A. 3-7,7-13, 13-17, 17-23, 23-27
B. 2.5-7.5,7.5-12.5, 12.5-17.5, 1.75-22.5, 22.5-27.5
C. 1.5-8.5 8.5-11.5, 11.5-18.5, 18.5-21.5, 21.5-28.5
D. 2-8.8-12 12-18, 18-22, 22-28

Answer

To find the class limits for the first five classes based on the given class marks (5, 10, 15, 20, 25, 30, 35, 40, 45, 50), we can follow these steps:

### Step-by-step Solution:

1. **Identify Class Marks**: The class marks provided are 5, 10, 15, 20, 25, 30, 35, 40, 45, and 50.

2. **Determine Class Intervals**: The class intervals can be determined by taking pairs of consecutive class marks. For example, the first class interval will be from 0 to 5, the second from 5 to 10, and so on.

3. **Calculate Class Limits**:
- For the first class (0 to 5):
- Lower limit = 0
- Upper limit = 5
- For the second class (5 to 10):
- Lower limit = 5
- Upper limit = 10
- For the third class (10 to 15):
- Lower limit = 10
- Upper limit = 15
- For the fourth class (15 to 20):
- Lower limit = 15
- Upper limit = 20
- For the fifth class (20 to 25):
- Lower limit = 20
- Upper limit = 25

4. **Write Class Limits**:
- First class: 0 to 5
- Second class: 5 to 10
- Third class: 10 to 15
- Fourth class: 15 to 20
- Fifth class: 20 to 25

### Final Class Limits:
- 0 to 5
- 5 to 10
- 10 to 15
- 15 to 20
- 20 to 25