The first, second, and third quartiles of the data set are as follows:

• $Q_1 = 3.0$ (First Quartile)
• $Q_2 = 5.5$ (Second Quartile or Median)
• $Q_3 = 6.25$ (Third Quartile)

Would you like further explanation on how these quartiles are calculated or need additional details?

Here are 5 related questions to explore:

1. How are quartiles used to measure data spread?
2. What is the interquartile range (IQR), and how can we calculate it for this dataset?
3. How can outliers be identified using quartiles?
4. What is the significance of the median in a dataset?
5. How do quartiles compare with percentiles in data analysis?

Tip: Sorting the data is the first step in calculating quartiles and other percentile-based measures.