AP Stats Quarter 1 Review

What kind of variable is the flight number on your boarding pass?

• Categorical

• Quantitative

What kind of variable is the number of passengers on all flights leaving Boston?

• Categorical

• Quantitative

What is the shape of the data set?

• Skewed Left

• Symmetrical

• Skewed Right

If a distribution is skewed right, which of the following is usually true?

• mean > median

• mean < median

• mean = median (approximately)

• the median is the highest value

If a distribution is skewed left, which of the following is usually true?

• mean > median

• mean < median

• mean = median (approximately)

• the median is the highest value

Look at the bar graph and answer the following question:

What does this bar graph show?

• Percentage of Children ages 0-4 with an Allergic Condition between 1997-2011

• Percentage of Children ages 5-9 with an Allergic Condition between 1997-2011

• Percentage of Children ages 10-17 with an Allergic Condition between 1997-2011

• Percentage of Children ages 0-17 with an Allergic Condition between 1997-2011

The students in Mr. Tyson’s high school statistics class were recently asked if they would prefer a pasta party, a pizza party, or a donut party. The following bar graph displays the data. This graph is misleading because

• the bars should be arranged in decreasing order by height.

• the vertical axis scale should start at 0.

• there should not be gaps between the bars.

• it should be a histogram, not a bar graph.

• preferred party should be on the vertical axis and number of students should be on the horizontal axis.

A survey was designed to study how business operations vary by size. Companies were classified as small, medium, or large. Questionnaires were sent to 200 randomly selected businesses of each size. Because not all questionnaires are returned, researchers decided to investigate the relationship between the response rate and the size of the business. The data are given in the following two-way table. What percent of all small companies receiving questionnaires responded?

• 33.30%

• 12.50%

• 62.50%

• 50.80%

• 20.80%

According to the box plot,

what is the MEDIAN?

• 79

• 85

• 93

• 70

• 99

What is the median age?

• 60

• 55

• 50

• 45