AP Stats Practice problems quiz 1-19
Question and answers already passed
2025
A group of students played a game in which they earned points for answering
questions correctly. The following dotplot shows the total number of points
earned by each student.
Which of the following is the best description of the distribution of points
earned? - correct answer ✔Bimodal with gap
The table shows the responses from 103 people when asked if they support a
proposal to expand the public library.
One person from those who responded will be selected at random. Which of
the following is closest to the probability that the person will be someone who
responded no, given that the person selected is age 55 or older? - correct
answer ✔0.818 (36/44)
Data were collected on the fiber diameter and the fleece weight of the wool
taken from a sample of 20 sheep. The data are shown in the following graphs.
Graph 1 is a scatterplot of fleece weight versus fiber diameter with the
respective least- squares regression line shown. Graph 2 is the associated
plot of the residuals versus the predicted values.
One point is circled on graph 1. Five point labeled A, B, C, D, and E are
identified on graph 2. Which point on graph 2 represents the residual for the
circled point on graph 1? - correct answer ✔Point C
The distributions of four variables are shown in the following histograms.
Which of the following shapes is NOT represented by one of the four
distributions? - correct answer ✔Uniform
, A random sample of 1,092 people were asked whether color was a
consideration in buying a new car. They were also asked to identify one
additional feature that was important. The responses are shown in the table.
Which of the following is closest to the proportion of people who responded no
to color consideration and who identified safety as the additional feature that
was important? - correct answer ✔0.18 (192/1092 = 0.175)
Scientists estimate that the distribution of the life span of the Galapagos
Islands giant tortoise is approximately normal with mean 100 years and
standard deviation 15 years. based on the estimate, which of the following is
closest to the age of the Galapagos Islands giant tortoise at the 90th
percentile of the distribution ? - correct answer ✔120 years ( inverse norm on
calc, area = 0.9, mean = 100, SD= 15)
A car rental agency has two locations in a city. The boxplots below summarize
the miles driven for one day of single- day car rentals at each location.
Based on the boxplots, which statement provides the best comparison of the
two locations? - correct answer ✔Compared with location A, the miles driven
for location B display more variability, and the median is greater.
For the purpose of determining the value of its end of year inventory, a
clothing store creates a list at the end of the year of every item in stock along
with each items wholesale price.
Which of the following is the best description of the end of year activity? -
correct answer ✔A census, because the wholesale prices of all items are
listed. (Census= everything... a sample would leave items out and not be
accurate)
A grocery store receives deliveries of corn from two farms, one in Iowa and
the other in Ohio. Both farms produce ears of corn with mean weight 1.26
pounds. The standard deviation of the weights of corn form the farm in Ohio s
0.01 pound greater than that from the farm in Iowa. A randomly selected ear
of corn from the farm in Iowa weighed 1.39 pounds, which has a standardized
Question and answers already passed
2025
A group of students played a game in which they earned points for answering
questions correctly. The following dotplot shows the total number of points
earned by each student.
Which of the following is the best description of the distribution of points
earned? - correct answer ✔Bimodal with gap
The table shows the responses from 103 people when asked if they support a
proposal to expand the public library.
One person from those who responded will be selected at random. Which of
the following is closest to the probability that the person will be someone who
responded no, given that the person selected is age 55 or older? - correct
answer ✔0.818 (36/44)
Data were collected on the fiber diameter and the fleece weight of the wool
taken from a sample of 20 sheep. The data are shown in the following graphs.
Graph 1 is a scatterplot of fleece weight versus fiber diameter with the
respective least- squares regression line shown. Graph 2 is the associated
plot of the residuals versus the predicted values.
One point is circled on graph 1. Five point labeled A, B, C, D, and E are
identified on graph 2. Which point on graph 2 represents the residual for the
circled point on graph 1? - correct answer ✔Point C
The distributions of four variables are shown in the following histograms.
Which of the following shapes is NOT represented by one of the four
distributions? - correct answer ✔Uniform
, A random sample of 1,092 people were asked whether color was a
consideration in buying a new car. They were also asked to identify one
additional feature that was important. The responses are shown in the table.
Which of the following is closest to the proportion of people who responded no
to color consideration and who identified safety as the additional feature that
was important? - correct answer ✔0.18 (192/1092 = 0.175)
Scientists estimate that the distribution of the life span of the Galapagos
Islands giant tortoise is approximately normal with mean 100 years and
standard deviation 15 years. based on the estimate, which of the following is
closest to the age of the Galapagos Islands giant tortoise at the 90th
percentile of the distribution ? - correct answer ✔120 years ( inverse norm on
calc, area = 0.9, mean = 100, SD= 15)
A car rental agency has two locations in a city. The boxplots below summarize
the miles driven for one day of single- day car rentals at each location.
Based on the boxplots, which statement provides the best comparison of the
two locations? - correct answer ✔Compared with location A, the miles driven
for location B display more variability, and the median is greater.
For the purpose of determining the value of its end of year inventory, a
clothing store creates a list at the end of the year of every item in stock along
with each items wholesale price.
Which of the following is the best description of the end of year activity? -
correct answer ✔A census, because the wholesale prices of all items are
listed. (Census= everything... a sample would leave items out and not be
accurate)
A grocery store receives deliveries of corn from two farms, one in Iowa and
the other in Ohio. Both farms produce ears of corn with mean weight 1.26
pounds. The standard deviation of the weights of corn form the farm in Ohio s
0.01 pound greater than that from the farm in Iowa. A randomly selected ear
of corn from the farm in Iowa weighed 1.39 pounds, which has a standardized
