Central Tendencies Including Range and Outliers

Use the interquartile range to identify any outliers in the following data.

23, 22, 25, 16, 27, 43, 29, 40, 35

• No outliers.

• 43 is an outlier.

Use the interquartile range to identify any outliers in the following data.

• No outliers.

• 88 is an outlier.

Using the information below, identify which of the following is NOT an outlier:
Q1 = 53
Q2 = 55
Q3=61

• 73

• 40

• 80

• 73.5

Find the Mean of the following numbers:
84, 88, 72, 74, 98, 16, 94 
(Round to the nearest tenth.)

• 75.1

• 84.5

• 16.0

• There is no Mean.

Find the IQR of the following numbers:
84, 88, 72, 74, 98, 16, 94 

• 78

• 22

• 16

• There is no IQR.

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.

Mario wants to his parents to think he is doing very well in math class. His tests this quarter are 62, 50, 90, 90, and 43. Which measure of central tendency should he report to them?

• mean

• median

• mode

• IQR

The table shows the ages of automobiles in the parking lot. The range of the ages is 12 years. Find the missing age.

• 12

• 13

• 14

• 15

Find the Lower Quartile of the following numbers:
84, 88, 72, 74, 98, 16, 94 

• 72

• 88

• 94

• There is no Lower Quartile.

The prices at several different stores for a pair of shoes are shown below.
$78, $79, $81, $82, $83
Two days later, another store has the same shoes on sale for $65. How does the new price affect the data?

• Only the range was affected.

• The median increased, and the range increased.

• The mean increased, and the range increased.

• The mean decreased and the range increased.