AP Stats Unit

What is the shape of the distribution?

• bimodal

• trimodal

• unimodal

According to the ogive, what value most closely represents a cumulative frequency of 60% (60th percentile)?

• 40

• 47

• 52

• 55

What does standard deviation measure?

• Center

• A typical value

• How good the numbers in a set are

• The average distance the data values are from the mean

• The Range

What percentage of the data is between 40 and 90?

• 25 %

• 50%

• 75%

• 100%

Which of the following histograms could have been constructed from the same data as the boxplot?

• A

• B

• C

• D

• E

Which of the following is true based on the graph?

• The number of men who preferred sports is greater than the number of women who preferred sports.

• The number of women who preferred dance is greater than the number of men who preferred dance.

• The proportion of women who preferred TV is greater than the proportion of men who preferred TV.

• The proportion of men who preferred sports is greater than the proportion of women who preferred sports.

The graph shows the distribution of scores of 30 students on a mathematics test. Based on the histogram, which statement must be true?

• The lowest test score is 41%.

• The highest test score is 100%.

• The mean test score is between 81% and 90%.

• The median test score is not greater than 80%.

• The lower quartile of the test scores is greater than 60%.

Which statement best describes this graph?

• There is a peak at 47.

• There is a cluster around 38-40.

• The mode is 40.

• There is a gap in the data between 39-40.

What is the formula for a z-score?

• (mean-value)/standard deviation

• mean - value

• value/mean

• (value-mean)/standard deviation

How do we determine outliers mathematically? Check all that apply.

• 1.5(IQR)

• Q3 - Q1

• Q3 + Q1

• Q3 + 1.5(IQR)