Quartiles and Interquartile Range

1. Order the Data from least to greatest
2. Find the median
3. Split the data in half, lower half and upper half
4. First Quartile- Find the median of the lower half
5. Third Quartile - Find the median of the upper half
6. The interquartile range- Take the third quartile and subtract the first quartile

**Quartiles show the spread of data