Calculating Outliers

Use the 1.5 IQR rule to determine if there are any outliers for the following numbers:
84, 88, 72, 74, 98, 16, 94

• Yes, 16 is an outlier.

• Yes, 33 is an outlier.

• Yes, 98 is an outlier.

• There are no numbers less than 39 or greater than 124, therefore there are no outliers.

When might the mean not be the best measure of center?

• When you don't feel like calculating the mean

• When there is more than one mode

• When you have a big range

• When you have outliers in your data

What are the coordinates of the outlier?

• (6,9)

• (9,6)

• What outlier

What are the coordinates of the outlier?

• (3,4)

• (4,3)

• (3,10)

Which data point did the statistician exclude?

• (2.3, 11.0)

• (4.2, 16.5)

• (6.4, 23.1)

• (8.2, 24.3)

Which scenario is most likely to have outliers?

• Ages in a senior citizen community

• Heights of adult males

• Test scores where most are 90% but a few below 50%

• Number of pages in novels

What are the coordinates of the outlier?

• (2,1)

• (4,3)

• (1,2)

What are the coordinates of the outlier?

• (9,1)

• (0,3)

• (1,9)

What are the coordinates of the outlier?

• (9,3)

• (3,9)

• (2,0)

• (0,2)

What are the coordinates of the outlier?

• (9,2)

• (3,9)

• (6,2)

• (0,2)