ALG STRAT: 5 $# summary and standard deviation

What is the mean of the following data set: 3, 7, 8, 5, 10?

• 6.6

• 7.2

• 8.4

• 9.2

Which of the following is the median of the data set: 12, 15, 11, 14, 13?

• 12

• 13

• 14

• 15

In the data set 4, 4, 6, 8, 9, what is the mode?

• 4

• 6

• 8

• 9

What is the range of the following data set: 5, 10, 15, 20, 25?

• 15

• 20

• 25

• 30

Which of the following represents the first quartile (Q1) of the data set: 2, 4, 6, 8, 10?

• 2

• 4

• 5

• 6

What is the third quartile (Q3) of the data set: 3, 7, 8, 12, 15?

• 3

• 15

• 13.5

• 8

Which of the following best describes a box plot?

• A graph that shows the frequency of data

• A graph that displays the distribution of data based on a five-number summary

• A graph that shows the relationship between two variables

• A graph that displays data in a circular format

What is the standard deviation of the data set: 2, 4, 4, 4, 5, 5, 7, 9?

• 1.5

• 2

• 2.5

• 3

Which of the following best describes variability in a data set?

• The average of the data set

• The spread of the data set

• The middle value of the data set

• The most frequent value in the data set

If the mean of a data set is 10 and the sum of all data points is 50, how many data points are in the set?

• 4

• 5

• 6

• 7