Determine the Appropriate Measure of Center and Variability

The _________can be used to determine the median.

• line plot

• box plot

• histogram

Answer explanation

The histogram does not give you individual values.

The _________ is an appropriate measure of center for a data set that is not symmetrical and has outliers.

• Mean

• Median

Answer explanation

Outliers will affect the media and not give the best representation of the central tendency.

Which display would you prefer to use to determine the median?

• box plot

• line plot

• stem and leaf

Answer explanation

The box plot displays the median without having to do any calculations.

When using the mean to summarize the center, __________ should be used o describe the spread when the data is bell-shaped.

• IQR

• range

• standard deviation

The best description of the data is ​ (a)   . ​ ​ The most appropriate measure of center is the​ (b)   . The most appropriate measure of variability is the ​ (c)   .

• range

• mean

• IQR

• median

• skewed right

• symmetric

• symmetric with an outlier

• skewed left

The best description of the data is ​ ​ (a)   . ​ ​ The most appropriate measure of center is the​ ​ (b)   . The most appropriate measure of variability is the ​ ​ (c)   .

​

• range

• mean

• skewed left

• median

• IQR

• skewed right

• symmetric

• symmetric with an outlier

The best description of the data is ​ (a)   . ​ ​ The most appropriate measure of center is the​ (b)   . The most appropriate measure of variability is the ​ (c)   .

• range

• mean

• IQR

• median

• skewed right

• symmetric

• symmetric with an outlier

• skewed left

The best description of the data is ​ ​ (a)   . ​ ​ The most appropriate measure of center is the​ ​ (b)   . The most appropriate measure of variability is the ​ ​ (c)   .

• range

• mean

• skewed left

• median

• IQR

• skewed right

• symmetric

• symmetric with an outlier

When using the median to summarize the center, _________ should be used to describe the spread.

• IQR

• range

• standard deviation

The _________ can be used to determine the interquartile range. (IQR)

• line plot

• box plot

• histogram

Answer explanation

The box plot is divided into quartiles. The IQR can be easily determined from it.