1. Knight’s Charge Quiz 1! 
Clear desks.
NO Calculator!

2. Practice 2
The following numbers represent the scores of the UNC Men’s Basketball team this season thus far:
84, 62, 80, 82, 93, 59, 79, 81, 82, 83, 97, 75, 84, 67, 57, 45, 82, 61, 80
Using our calculators, lets find the 5 Number Summary and graph our Box Plot!

3. TO THE CALCULATOR!!! Five Number Summary! Min = _____
84, 62, 80, 82, 93, 59, 79, 81, 82, 83, 97, 75, 84, 67, 57, 45, 82, 61, 80
How do I enter in a list of numbers???
Calculator Steps:
Five Number Summary!
Min = _____
1st Quartile = _______
Median = ________
3rd Quartile = ________
Max = ________

4. Creating the Graph Five Number Summary! Min = 45 1st Quartile = 62
Median = 80
3rd Quartile = 83
Max = 97
Creating the Graph

5. Interpreting the graph.
Let’s take a closer look inside each section of a box plot.

6. From a Box Plot, we see many measures of spread (or variation)!
Range = 𝑴𝒂𝒙 −𝑴𝒊𝒏

7. Interquartile Range (IQR)
A NEW Measure of Spread
Interquartile Range (IQR)
IQR = Q3−Q1
Why is the IQR important?
It represents the “BOX” part of the box plot – which is about 50% of our data!

8. Standard Deviation
The ____________out the data is, the _______ the standard deviation.
Symbol on Calculator: _____
more spread
larger Sx

9. A final look at SHAPE… Median is closer to Q3 Median centered
Mean < MED
Median centered
Mean = MED
Median is closer to Q1
Mean > MED