Here is the histogram and frequency polygon based on the age groups and the number of people.

• The histogram is represented by the bars, showing the distribution of the number of people across different age groups.
• The frequency polygon is represented by the red line connecting the midpoints of each age group interval.

Would you like any additional details or have any questions?

Here are some related questions you might find interesting:

1. How do you calculate the midpoints of each class interval?
2. What are the benefits of using a frequency polygon over a histogram?
3. How can you estimate the mode from a histogram?
4. What is the significance of the area under the frequency polygon?
5. How would you interpret the skewness of the distribution in this data?

Tip: When constructing histograms and frequency polygons, always ensure that the class intervals are consistent to maintain accuracy in your analysis.