Let's first create the frequency distribution table for the given data based on the classes provided:

Classes:

• 10-14
• 15-19
• 20-24
• 25-29
• 30-34
• 35-39

Data:

10, 12, 15, 18, 19, 15, 26, 34, 25, 36, 39, 37, 26, 24, 25, 21, 20, 10, 16, 18, 25, 34, 12, 15, 24, 38, 32, 25, 24, 16, 18, 19, 34, 38, 26, 22, 20, 10, 30, 16

Step 1: Count the frequency for each class.

1. Class 10-14:
   Values: 10, 12, 12, 10, 10
   Frequency: 5

2. Class 15-19:
   Values: 15, 18, 19, 15, 18, 16, 18, 15, 16, 18, 19
   Frequency: 11

3. Class 20-24:
   Values: 21, 20, 24, 24, 20, 24, 22
   Frequency: 7

4. Class 25-29:
   Values: 26, 25, 26, 25, 25, 25, 26
   Frequency: 7

5. Class 30-34:
   Values: 34, 34, 34, 32, 30
   Frequency: 5

6. Class 35-39:
   Values: 36, 39, 37, 38, 38
   Frequency: 5

Step 2: Calculate the total number of data values.

Total frequency = 5 + 11 + 7 + 7 + 5 + 5 = 40

Step 3: Calculate the percentage of data values that fall in the class 20-24.

$\text{Percentage} = \left(\frac{\text{Frequency of Class 20-24}}{\text{Total Frequency}}\right) \times 100 = \left(\frac{7}{40}\right) \times 100 = 17.5\%$

Answer: 17.5% of the data values fall in the class 20-24.

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Do you want more details or have any questions?

Here are 5 related questions:

1. What is the relative frequency of the class 15-19?
2. How do you calculate the cumulative frequency for these classes?
3. What is the mode of the data set?
4. Can you construct a histogram based on this frequency distribution?
5. What is the mean of the data set?

Tip: When calculating percentages for a specific class, always ensure that the total frequency is accurate to avoid miscalculations.