AP Stats Intro / PWS Review

Here is the dot plot of voter turnout (as a percentage of voting-age population) for the 50 states—plus the District of Columbia—in a recent presidential election. Which of the following best describes this distribution?

• The distribution of voter turnout is skewed slightly left, centered at about 62%, with a range of 24%.
• The distribution of voter turnout is roughly symmetric, centered at about 60%, with a range of 30%.
• The distribution of voter turnout is skewed slightly right, centered at about 62%, with a range of 24%.
• The distribution of voter turnout is bimodal, centered at about 60%, with a range of 30%.

Tags

CCSS.HSS.ID.A.3

CCSS.HSS.ID.A.2

CCSS.HSS.ID.A.1

The stem-and-leaf diagram below gives the distribution of the ages in years of 20 participants at a family reunion. Which of the following statements about the distribution is correct?

• The first quartile is larger than the third quartile.
• The distribution is strongly skewed to the left.
• It makes the most sense to use the mean and standard deviation as a numerical summary of the center and spread of this distribution.
• The mean is larger than the median.

Tags

CCSS.HSS.ID.A.3

CCSS.HSS.ID.A.2

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.

Tags

CCSS.HSS.ID.A.3

CCSS.HSS.ID.A.2

CCSS.HSS.ID.A.1

In which of the following situations would a pie chart be an appropriate graph to use to summarize your data?

• You want to display the distribution of favorite color for the students in your statistics class.
• You want to compare the percentages of students in each grade at your school who favor a certain candidate for school president.
• You want to compare the life expectancies of different professions by displaying and comparing graphs of ages at death for random samples of famous scientists, authors, actors, and politicians.

Tags

CCSS.6.SP.B.4

CCSS.6.SP.B.5

Which of the distributions displayed in the dot plots below has the highest standard deviation?

• Distribution A
• Distribution B
• Distribution C

Tags

CCSS.HSS.ID.A.3

CCSS.HSS.ID.A.2

According to the 1.5 x IQR rule, how many outliers are there in the data set 72, 110, 114, 115, 118, 123, 144, 156?

• None
• One
• Two
• Three

Tags

CCSS.HSS.ID.A.3

The histogram shows the typical travel time to school (self-reported) for 50 high school students. Which of the following statements is true about the mean and median of this distribution?

• Mean > Median
• Mean < Median
• Mean = Median
• Mean ≈ Median

Tags

CCSS.HSS.ID.A.3

CCSS.HSS.ID.A.2

CCSS.HSS.ID.A.1

An adult male aged 20-29 who is 73 inches tall would be shorter than what percent of males in his age group?

• 10%
• 15%
• 85%
• 90%

Tags

CCSS.6.SP.B.4

CCSS.6.SP.B.5

CCSS.6.SP.A.1

CCSS.6.SP.A.2

A random sample of 50 students reported their gender, then selected from 4 options of one word that best described how they felt at the time. The results are summarized in the table. What percentage of males felt tired?

• 1.2 %

• 12.0%

• 24.0%

• 54.5%

• 57.1%

Tags

CCSS.HSS.CP.A.4

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.4

CCSS.HSS.ID.B.5

The following bar graph gives the percent of owners of three brands of trucks who are satisfied with their truck. What is wrong with the way information is presented in this graph?

• There should be a title and a variable label on the horizontal scale.

• The vertical scale should begin at 0 so the Chevrolet bar doesn't look disproportionately larger than Ford and Toyota.

• The vertical scale should have been measured in number of owners satisfied instead of percent of owners satisfied.

• This information should have been displayed in a pie chart.

Tags

CCSS.HSS.ID.A.1

CCSS.HSS.IC.B.6