To determine the class width for the classes listed in the frequency table, we use the following formula:

$\text{Class width} = \text{Upper boundary of a class} - \text{Lower boundary of the same class}$

Looking at the class boundaries for the first class (1080–1149):

$\text{Class width} = 1149 - 1080 = 69$

Thus, the class width is 69.

Would you like to proceed with the next steps or have any other questions?

5 Related Questions:

1. How is class width related to the overall distribution of data?
2. Can the class width vary between different frequency tables?
3. How can we use class width to create histograms?
4. What would happen if we change the class width to a smaller or larger value?
5. How do class boundaries differ from class intervals?

Tip:

When choosing class width, it is essential to ensure that the intervals are neither too wide (which can hide details) nor too narrow (which can cause over-clustering of data).