Data Unit Review

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Priya asked some student athletes at her school how many hours each month they spent practicing their sport. Here is a histogram for the data she collected.

About how many students did Priya ask?

• 30

• 90

• 100

• 120

Priya asked some student athletes at her school how many hours each month they spent practicing their sport. Here is a histogram for the data she collected. Is the mean or the median a more appropriate measure of center for this data set?

• Mean because the data is symmetrical

• Median because the data is not symmetrical

Priya asked some student athletes at her school how many hours each month they spent practicing their sport. Here is a box plot for the data she collected. Can Priya use this box plot to find the exact MEDIAN?

• No, because it is not shown in the box plot.

• Yes, because it is shown in the box plot.

Priya asked some student athletes at her school how many hours each month they spent practicing their sport. Here is a box plot for the data she collected. Can Priya use the box plot to find the exact mean?

• No, because the exact data points are not shown.

• Yes, because there is enough information in the box plot.

Priya asked some student athletes at her school how many hours each month they spent practicing their sport. Here is a box plot for the data she collected.

What would be an appropriate measure of VARIABILITY for the data shown in this box plot?

• IQR because median is used as a measure of center and IQR compares the range between Q1 and Q3.

• MAD because the mean is used as a measure of center and MAD compares the average distance each data point is from the mean.

• Range because it describes the entire spread of the data set.

Some students compared their walkathon times with each other. What is the difference between the longest amount walked and the shortest amount walked?

• 1 1/4

• 2/4

• 1

• 3/4

Which angle is an acute angle?

• A

• B

• C

• D

Which angle is a right angle?

• A

• B

• C

• D

Which angle is an obtuse angle?

• A

• B

• C

• D