AP Statistics - Final Exam Study Guide
(V.2) Questions All Answered Correct.
1. The histogram summarizes the responses of 100 people when asked,"What was the price of
the last meal you purchased?"
Based on the histogram, which of the following could be the interquartile range of the prices?
A) $40
B) $21
C) $10
D) $5
E) $3 - Answer D) $5
2. Suppose a certain scale is not calibrated correctly, and as a result, the mass of any object is
displayed as 0.75 kilogram less that its actual mass. What is the correlation between the actual
masses of a set of objects and the respective masses of the same set of objects displaced by the
scale?
A) -1
B) -0.75
C) 0
D) 0.75
E) 1 - Answer E) 1
3. A veterinarian collected data on the weights of 1,000 cats and dogs treated at a veterinary
clinic. The weight of each animal was classified as either healthy, underweight, or overweight.
The data are summarized in the table.
Based on the data in the table, which of the following is the appropriate type of graph to
visually show whether a relationship exists between the type of animal and the weight
classification.
, E) Dotplot - Answer D) Segmented bar chart
4. A program exists to encourage more middle school students to major in math and science
when they go to college. The organizers of the program want to estimate the proportion of
students who, after completing the program, go on to major in math or science in college. The
organizers will select a sample of students from a list of all students who completed the
program. Which of the following sampling method describes a stratified random sample?
A) Select all female students on the list.
B) Randomly select 50 students on the list.
C) Randomize the names on the list and then select every tenth student on the randomized list.
D) Randomly select 25 names from the female students on the list and 25 names from the male
students on the list.
E) Randomly select 50 students on the list who are attending college. - Answer
5. The normal curve shown represents the sampling distribution of a sample mean for a sample
size n=25, selected at random from a population with a standard deviation Ox.
Which of the following is the best estimate of the standard deviation of the population, Ox?
A) 3
B) 6
C) 15
D) 30
E) 75 - Answer E) 75
6. Two random samples, A and B, were selected from the same population to estimate the
population mean. For each sample, the mean, standard deviation, and margin of error for a 95
percent confidence interval for the population mean are show in the table.
Which of the following could explain why the margin of error of sample A is greater than the
margin of error of Sample B?
A) The sample size of A is greater than the sample size of B.
(V.2) Questions All Answered Correct.
1. The histogram summarizes the responses of 100 people when asked,"What was the price of
the last meal you purchased?"
Based on the histogram, which of the following could be the interquartile range of the prices?
A) $40
B) $21
C) $10
D) $5
E) $3 - Answer D) $5
2. Suppose a certain scale is not calibrated correctly, and as a result, the mass of any object is
displayed as 0.75 kilogram less that its actual mass. What is the correlation between the actual
masses of a set of objects and the respective masses of the same set of objects displaced by the
scale?
A) -1
B) -0.75
C) 0
D) 0.75
E) 1 - Answer E) 1
3. A veterinarian collected data on the weights of 1,000 cats and dogs treated at a veterinary
clinic. The weight of each animal was classified as either healthy, underweight, or overweight.
The data are summarized in the table.
Based on the data in the table, which of the following is the appropriate type of graph to
visually show whether a relationship exists between the type of animal and the weight
classification.
, E) Dotplot - Answer D) Segmented bar chart
4. A program exists to encourage more middle school students to major in math and science
when they go to college. The organizers of the program want to estimate the proportion of
students who, after completing the program, go on to major in math or science in college. The
organizers will select a sample of students from a list of all students who completed the
program. Which of the following sampling method describes a stratified random sample?
A) Select all female students on the list.
B) Randomly select 50 students on the list.
C) Randomize the names on the list and then select every tenth student on the randomized list.
D) Randomly select 25 names from the female students on the list and 25 names from the male
students on the list.
E) Randomly select 50 students on the list who are attending college. - Answer
5. The normal curve shown represents the sampling distribution of a sample mean for a sample
size n=25, selected at random from a population with a standard deviation Ox.
Which of the following is the best estimate of the standard deviation of the population, Ox?
A) 3
B) 6
C) 15
D) 30
E) 75 - Answer E) 75
6. Two random samples, A and B, were selected from the same population to estimate the
population mean. For each sample, the mean, standard deviation, and margin of error for a 95
percent confidence interval for the population mean are show in the table.
Which of the following could explain why the margin of error of sample A is greater than the
margin of error of Sample B?
A) The sample size of A is greater than the sample size of B.
