The five-number summary for a dataset, as represented in a boxplot, consists of:

1. Minimum: The smallest value in the dataset.
2. First Quartile (Q1): The median of the lower half of the data.
3. Median (Q2): The middle value of the dataset.
4. Third Quartile (Q3): The median of the upper half of the data.
5. Maximum: The largest value in the dataset.

Based on the boxplot you provided, here is the five-number summary:

1. Minimum = 5
2. First Quartile (Q1) = 10
3. Median (Q2) = 13
4. Third Quartile (Q3) = 15
5. Maximum = 18

Let me know if you want more details or have any questions!

Here are five related questions:

1. How do we calculate quartiles from a dataset?
2. Why is the five-number summary important in understanding data distribution?
3. How can we identify outliers using a boxplot?
4. What does the interquartile range (IQR) represent?
5. How does a boxplot help in comparing two datasets?

Tip: A boxplot visually summarizes the distribution of a dataset, making it easy to spot outliers and understand data spread.