Measures Spread

• The data has an outlier, 3.05 inches.

• The standard deviation is 0.9114

• The IQR is 0.961

• The median is 5.355

• The data has no outliers

The golf coach wants to compare the students’ scores at the end of the season with their scores at the beginning of the season. What is the mean and standard deviation of the data at the beginning of the season?

• Mean: 80; Standard Deviation: 2.6

• Mean: 80; Standard Deviation: 3.1

• Mean: 82; Standard Deviation: 2.5

• Mean: 82; Standard Deviation: 2.8

The golf coach wants to compare the students’ scores at the end of the season with their scores at the beginning of the season. What is the mean and standard deviation of the data at the end of the season?

• Mean: 79;

  Standard Deviation: 2.5

• Mean: 79;

  Standard Deviation: 2.8

• Mean: 81;

  Standard Deviation: 2.6

• Mean: 81;

  Standard Deviation: 2.2

The following dotplot shows the number of songs on each album in your collection. Each dot represents a different album. How many outliers are there in the data set?

• 0

• 1

• 2

• 3

The following dotplot shows the centuries during which the 11 castles whose ruins remain in Somerset, England were constructed. Each dot represents a different castle. How many outliers are there in the data set?

• 0

• 1

• 2

• 3

• 0%

• 25%

• 50%

• 75%

• 100%

Which number is an outlier?

• Only 50

• Only 79

• Both 50 and 79

• No outliers

Which statement best describes the outliers?

• Only 39 is an outlier.

• Both 26 and 39 are outliers.

• Both 39 and 3 are outliers

• Only 3 is an outlier

• There are no outliers.

Which statement best describes the outliers?

• 13 is the only outlier

• 62 is the only outlier

• Both 13 and 62 are outliers

• There are no outliers.

Which data sets have a standard deviation of 0? Select all that apply.

• {25, 25, 25, 25}

• {0, 1, 2, 3, 4, 5}

• {1, 1, 1, 1, 1, 1, 1, 1}

• {10, 20, 30, 40, 50}

• {93, 93}