Question

Question 4(Multiple Choice Worth 2 points)

(Appropriate Measures MC)

The scores earned in a flower-growing competition are represented in the stem-and-leaf plot.



1 7, 9
2 1, 5, 9
3 0, 1, 2
4 6, 9
Key: 2|1 means 21


What is the appropriate measure of variability for the data shown, and what is its value?
The IQR is the best measure of variability, and it equals 32.
The range is the best measure of variability, and it equals 11.
The IQR is the best measure of variability, and it equals 11.
The range is the best measure of variability, and it equals 32.

Question 5(Multiple Choice Worth 2 points)
(Appropriate Measures MC)

The table shows the number of goals made by two hockey players.


Player A Player B
2, 3, 1, 3, 2, 2, 1, 3, 6 1, 4, 5, 1, 2, 4, 5, 5, 11


Find the best measure of variability for the data and determine which player was more consistent.
Player B is the most consistent, with an IQR of 3.5.
Player B is the most consistent, with a range of 10.
Player A is the most consistent, with an IQR of 1.5.
Player A is the most consistent, with a range of 5.

Question 6(Multiple Choice Worth 2 points)
(Appropriate Measures MC)

The line plot displays the cost of used books in dollars.

A horizontal line starting at 3 with tick marks every one unit up to 8. The line is labeled Cost in Dollars, and the graph is titled Cost of Used Books. There are two dots above 4, 5, and 7. There are four dots above 6.

Which measure of center is most appropriate to represent the data in the graph, and why?

The median is the best measure of center because there are no outliers present.
The mean is the best measure of center because there are no outliers present.
The median is the best measure of center because there are outliers present.
The mean is the best measure of center because there are outliers present.

Question 7(Multiple Choice Worth 2 points)
(Appropriate Measures MC)

The table shows the length, in inches, of fish in a pond.


15 18 9 22
7 15 10 18


Determine if the data contains any outliers. If so, list the outliers.
There is an outlier at 22.
There is an outlier at 7.
There are outliers at 7 and 22.
There are no outliers.

Answer 1

Question 4: The appropriate measure of variability for the data shown is the range, and it equals 11. Therefore, the correct answer is: The range is the best measure of variability, and it equals 11.

Question 5: The best measure of variability for the data is the range, and Player A was more consistent with a range of 5. Therefore, the correct answer is: Player A is the most consistent, with a range of 5.

Question 6: The median is the best measure of center because there are outliers present. Therefore, the correct answer is: The median is the best measure of center because there are outliers present.

Question 7: The data contains an outlier at 22. Therefore, the correct answer is: There is an outlier at 22.