To determine the class width, we calculate the difference between the upper and lower boundaries of any one class.

For this data set:

• The first class is $100 - 104$.
• The lower boundary is 100.
• The upper boundary is 104.

The class width is calculated as:

$\text{Class Width} = \text{Upper Boundary} - \text{Lower Boundary} + 1$

So,

$\text{Class Width} = 104 - 100 + 1 = 5$

Therefore, the class width is 5.

Would you like more details or have any other questions?

Here are 5 related questions you might find interesting:

1. How do you determine the number of classes in a frequency distribution?
2. What is the importance of selecting an appropriate class width in a frequency distribution?
3. How would changing the class width affect the appearance of a histogram?
4. Can you calculate the midpoint of each class?
5. What is the difference between class width and class interval?

Tip: When working with frequency distributions, always check that the classes are mutually exclusive and collectively exhaustive to avoid any overlap or missing data.