Lesson objective: Apply knowledge of center and spread to solve problems using a data set.

This lesson provides an opportunity for students to apply their knowledge and understanding of describing center and spread to a real-life situation. Students are asked to analyze data and use the data to answer questions about a situation.

Key Concept students will use:

- measures of center and variability can be used to describe a data set

Skills students will use:

- describe measures of center and spread
- find measures of center and variability (Grade 6, Unit 12)

Students engage in Mathematical Practice 3 (construct viable arguments and critique the reasoning of others) as they create a report to convince the CEO of Sharp Pencils that 60 pencils should not be included in the "Back to School Pencil Pack".

**Key vocabulary: **

- dot plot
- interquartile range
- mean
- mean absolute deviation
- median
- mode
- range

**Special materials needed:**