AP Statistics Unit Review

If we are looking at a boxplot and notice that the distribution is skewed right, what measure of center should we use?

• Mean

• Mode

• Median

• IQR

A researcher has gathered data about the number of soft drinks teenagers drink on a daily basis by taking a random sample of 1500 teenagers from around the world. We find that our data shows that the mean is larger than the median. What does this tell us about the shape of the distribution?

• skewed right

• skewed left

• uniform

• symmetric

Given the five number summary below, find the IQR:

5,8,10,14,26

• 21

• 6

• 10

• 9

If the mean and median of a distribution are equal, what does this tell us about the shape?

• Symmetric

• Unimodal

• Skewed Right

• Skewed Left

Which of the following is not a part of the describing/comparing distribution process?

• Spread

• Center

• Shape

• Units

What do we call a numerical summary of sample data?

• Quartile

• Statistic

• Parameter

• Percentile

Doctors often compare someone's height and weight to worldwide or nationwide averages. If doctors were to convert the height measurements from feet to inches, how would the center and spread change?

• The center would not change, but the spread would change.

• The center would change with the conversion factor as well as the spread.

• Neither center nor spread would change.

• The center would change, but the spread would not.

How do we determine an upper end outlier of a distribution?

• Mean + 3(IQR)

• Median +3(IQR)

• Q3 +1.5(IQR)

• Maximum - .5(IQR)

Which of the following do we not get in a boxplot?

• Median

• Maximum

• Minimum

• Mean

Which of the following is a specification of the normal distribution?

• Skewed Right

• Bimodal

• Symmetric

• Small Range