# Math Curriculum

## Level DUnit: Statistics and ProbabilityKey Lesson 6.8.15 Quartiles and Interquartile Range

Lesson topic: Interquartile range (IQR) and box plots

## Instructor Materials

• Teacher guide
• Slides
• Practice Problems resource
• CCRS standard: 6.SP.5c, 6.SP.5d
• Learning goal: Calculate the range and interquartile range (IQR) of a data set and interpret (orally and in writing) what they tell us about the situation. Comprehend that “interquartile range (IQR)” is another measure of variability that describes the span of the middle half of the data. Identify and interpret (in writing) the numbers in the five-number summary for a data set, i.e., the minimum, first quartile (Q1), median (Q2), third quartile (Q3), and maximum.
• 6.8 Assessment and Practice Problems

## Related Lessons

### Review and Extend

Use these supplemental lessons if needed after teaching this key lesson.

Used with permission:

1. IM K-5 Math was originally developed by Open Up Resources (OUR) and authored by Illustrative Mathematics® (IM), and is copyrighted 2017-2019 by Open Up Resources. It is licensed under the Creative Commons Attribution 4.0 International License (CC BY 4.0). OUR's K-5 Math Curriculum is available at https://openupresources.org/math-curriculum/.