1.
Determine the five number summary for the data set above.
What is the interquartile range?
Create a boxplot of the data.

2. Outliers
___________ are elements of a data set that are significantly ______ or _______ than the rest of the data.
Are there any outliers in this data?
How do you know?

3. Outliers
By definition, a number is an outlier if it is __.__ times the ______above the Q3 or below the Q1.
1.5 * ___ = ___
Q1 – ___ = ___
Q3 + ___ = ___
So, any number that lies beyond
____________________________
Is 20 an outlier?

4. You Try! Calculating Outliers
Homework Grades:
Are there any elements of the data that appear to be outliers?
What is the IQR?
What is 1.5 ● IQR?
Determine the values that are outliers
Are any homework grades outliers?