PS 26 03 10 Identifying Outliers in Data Sets

Identify the outlier in the data set: 20, 52, 86, 80, 44, 49, 57, 41, 44, 55.

• 20

• 44

• 55

• 57

Which number is an outlier in the set: 4, 11.6, 50, 23, 20.1, 19, 29, 12.7, 8, 23, 57.5?

• 4

• 50

• 57.5

• 23

If a data set has one value much higher than the rest, what should you do?

• Check if it is an outlier

• Ignore it

• Add it to the mean

• Multiply it by 2

Which of the following is NOT an outlier in the set: 67, 71, 79, 65, 52, 71, 73, 94, 69?

• 71

• 94

• 52

• 79

If you remove the outlier from a data set, what happens to the mean?

• It becomes more representative of the data

• It increases

• It decreases

• It stays the same

If a data set has values: 18, 68, 15, 45, 46, 36, 72, 34, 42, 38, which value is much higher than the rest?

• 72

• 68

• 46

• 38

In the set 22, 26, 31, 37, 31, 26, 50, 28, 24, which value is much higher than the rest?

• 50

• 37

• 31

• 26

Which of the following numbers is an outlier in the data set: 92, 88, 106, 169, 76, 72, 67, 10, 115, 73, 111, 59?

• 72

• 10

• 73

• 67

Which of the following is an outlier in the set: 77, 51.4, 82, 91.6, 87, 98, 59, 81.4, 76, 119, 85, 91?

• 77

• 51.4

• 85

• 87

Which number is an outlier in the data set: 22, 26, 31, 37, 31, 26, 50, 28, 24?

• 26

• 31

• 50

• 28