Identifying Outliers with Quartiles

Given the data set: 5, 7, 12, 15, 18, 22, 30. What is the first quartile (Q1)?

• 7

• 12

• 15

• 18

Tags

CCSS.6.SP.B.5C

The data set: 3, 4, 8, 9, 17, 19 has an outlier. If the interquartile range (IQR) is 10, what is the lower boundary for outliers?

• -11

• -6

• 3

• 4

What is the third quartile (Q3) of the data set: 2, 4, 6, 8, 10, 12, 14?

• 6

• 10

• 12

• 14

Tags

CCSS.6.SP.B.5C

In a data set: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, which value is considered an outlier if the interquartile range (IQR) is 45?

• 10

• 50

• 90

• 100

For the data set: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, what is the interquartile range (IQR)?

• 4.5

• 5

• 5.5

• 6

Tags

CCSS.6.SP.B.5C

If the first quartile (Q1) of a data set is 25 and the third quartile (Q3) is 75, which of the following could be an outlier?

• 15

• 50

• 85

• 100

Given the data set: 8, 15, 22, 24, 25, 29, 34, what is the median?

• 22

• 24

• 25

• 29

Tags

CCSS.6.SP.B.5C

In a data set: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, the lower quartile (Q1) is 15 and the upper quartile (Q3) is 35. What is the range of the data?

• 45

• 30

• 20

• 50

Tags

CCSS.6.SP.B.4

CCSS.HSS.ID.A.1

For the data set: 11, 13, 15, 17, 19, 21, 23, 25, which statement is true about the interquartile range (IQR)?

• It is less than 10.

• It is exactly 10.

• It is greater than 10.

• It cannot be determined.

Tags

CCSS.6.SP.B.5C

If a data set has a first quartile (Q1) of 10, a median of 20, and a third quartile (Q3) of 30, which of the following numbers is not an outlier?

• 5

• 15

• 25

• 35