Understanding Interquartile Range in Data Analysis

When dealing with a set of data, finding the interquartile range is essential in understanding the spread and distribution. To find the interquartile range, follow these steps:

1. Arrange the data in ascending order.
2. Calculate the median (Q2) of the entire data set.
3. Find the median of the lower half of the data, known as Q1.
4. Find the median of the upper half of the data, known as Q3.
5. Finally, subtract Q1 from Q3 to obtain the interquartile range.

By following these steps, students can effectively analyze the spread and variability of their data set.