Determine an Appropriate Measure of Center and Variability

The appropriate measure of spread for a data set that is skewed is...

• range

• standard deviation

• IQR

Answer explanation

The IQR gives a consistent measure of variability for skewed as well as normal distributions.

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.

The best measure of variability for bell-shaped numerical data is

• IQR

• Range

• Standard Deviation

Answer explanation

The standard deviation of a data set is the variation of each value to the mean.

Which is true?

• Mean < Median

• Mean = Median

• Mean > Median

Which is true?

• Mean < Median

• Mean = Median

• Mean > Median

Which is true?

• Mean < Median

• Mean = Median

• Mean > Median

Which measure of variability should you use?

• IQR

• standard deviation

Which is true?

• Mean < Median

• Mean = Median

• Mean > Median

It's the number you get when you add all the numbers together and then divide by the amount of numbers you have.

• mean

• median

• mode

• range

It's the middle number in a set of data.

• mean

• median

• mode

• range