AP Statistics Box Plots

What is the IQR of the Cruisers?

• 4

• 6

• 9

• 13

What is the term for the median of the upper half of the data?

• Q3

• Q1

• Median

• Minimum

What is the overall shape of the graph?

• Approximately Symmetrical
• Skewed left
• Skewed right

How are the mean and the median likely to be related in this histogram?

• Mean > Median
• Mean = Median
• Mean < Median
• Cannot be determined

The height of all the students in Ms. Long's class are recorded in the table. In which interval would the median fall?

• 60-65
• 50-54
• 40-44
• 55-59

Rhaul measured the heights of the apple trees in an orchard. What percent of the trees are 5-9 feet tall?

• 18.9%
• 31%
• 22.1%
• 10%

Use the 1.5 IQR rule to determine if there are any outliers for the following numbers:
84, 88, 72, 74, 98, 16, 94 

• Yes, 16 is an outlier.
• Yes, 33 is an outlier.
• Yes, 98 is an outlier.
• There are no numbers less than 39 or greater than 124, therefore there are no outliers.

The side-by-side boxplots show the distribution of test scores in Ms. Williams’s two sections of calculus. Based on these boxplots, which one of the following statements must be true?

• The lowest score in A period was close to the 15th percentile of the C period class.
• The mean score for students in C period was higher than the mean score for students in A period.
• More people scored between 72 and 90 in C period than scored between 72 and 81 in A period.
• The standard deviation of scores in A period is smaller than the standard deviation of scores in C period.

The box-and-whisker plot displays the number of inches of snowfall last year for 14 cities. Each city had a different amount of snowfall.

How many cities had more than 64 inches of snow?

• 10

• 7

• 8

• 3.5

Which group has a lower IQR?

• Group A

• Group B

• The IQRs are the same.