## Quiz Scores

## Opening

# Quiz Scores

These are the quiz score data used in Lesson 4:

{0, 1, 1, 2, 2, 3, 3, 3, 4, 5, 6, 6}

Discuss how the five-number summary is represented in a box plot.

- The five-number summary for this data:
- Lower extreme: 0
- Lower quartile: 1.5 (because the middle pair of values for the lower half of the data is 1 and 2, and 1.5 is halfway between 1 and 2—{0,1,1,2,2,3})
- Median: 3 (because the two middle numbers are both 3)
- Upper quartile: 4.5 (because the middle pair of values for the upper half of the data is 4 and 5, and 4.5 is halfway between 4 and 5—{3,3,4,5,6,6})
- Upper extreme: 6

- Study the box plot below. Explain to a partner how the five-number summary was used to draw the box plot.