if the class limit is 11-20 and the class boundary is 10.5-20.5,what is the class width?
Class width:
20.5 - 10.5 = 10
To find the class width, you subtract the lower class boundary from the upper class boundary.
In this case, the lower class boundary is 10.5 and the upper class boundary is 20.5. So the class width is:
20.5 - 10.5 = 10.
Therefore, the class width is 10.