To determine the midpoint for the fifth class, we use the following formula for the midpoint $M$ of a class interval:

$M = \frac{\text{Lower Class Limit} + \text{Upper Class Limit}}{2}$

For the fifth class (9.7–10.5):

• Lower class limit = 9.7
• Upper class limit = 10.5

Now, calculate the midpoint:

$M = \frac{9.7 + 10.5}{2} = \frac{20.2}{2} = 10.1$

Thus, the midpoint for the fifth class is $10.1$ dollars.

Would you like further details on this process, or do you have any other questions?

Here are 5 related questions:

1. How do we calculate the midpoint for other classes?
2. What is the purpose of finding midpoints in frequency distribution?
3. How can we find the mean cost of a book using midpoints and frequencies?
4. What is the difference between the midpoint and the class boundary?
5. How does the width of a class interval affect the midpoint?

Tip: Always double-check that you're adding the correct class limits when calculating midpoints to avoid errors.