AP Statistics Multiple Choice Test
Questions With Solved Solutions.
Which of the following is a true statement? - Answer D. Stemplots can show symmetry, gaps,
clusters, and outliers.
A teacher recorded grades for his class of 18 Statistics students. He accidentally recorded the
highest score much too high, he put a one in front, so the score was 192 instead of 92. The
corrected score was still greater than another grade in his class. Which of the following statistics
remained the same after the correction was made? - Answer A. Interquartile Range
Suppose the average score on a national test is 700 with a standard deviation of 50. If each
score is decreased by 10, what are the new mean and standard deviation? - Answer B. 690, 50
All of the following are properties of Normal Distribution EXCEPT - Answer D. A significant
majority of the observations fall 3 standard deviations above the mean
What was the standardized score (z-score) for a student who scored 500 on the SAT with a
mean of 490 and a standard deviation of 110? - Answer D. 0.09
Which of the following statements about the correlation r are true? - Answer E. I and III
If the correlation between two variables is close to 0, you can conclude that the scatterplot
would show - Answer C. no straight-line pattern, but there might be a strong pattern of
another form
The points on a scatterplot lie very close to a straight line. The correlation between x and y is
close to - Answer C. Either -1 or 1, we can't say which.
A statistics student decides to compute the correlation between two quantitative variables. She
finds r = 0.06. She concludes there is no relationship between the variables. Is she correct? -
Answer D. No - correlation signals a linear relationship, so other types of relations can exist,
she said there was NO relationship.
In a scatterplot of the average price of a barrel of oil and the average retail price of gasoline, you
Questions With Solved Solutions.
Which of the following is a true statement? - Answer D. Stemplots can show symmetry, gaps,
clusters, and outliers.
A teacher recorded grades for his class of 18 Statistics students. He accidentally recorded the
highest score much too high, he put a one in front, so the score was 192 instead of 92. The
corrected score was still greater than another grade in his class. Which of the following statistics
remained the same after the correction was made? - Answer A. Interquartile Range
Suppose the average score on a national test is 700 with a standard deviation of 50. If each
score is decreased by 10, what are the new mean and standard deviation? - Answer B. 690, 50
All of the following are properties of Normal Distribution EXCEPT - Answer D. A significant
majority of the observations fall 3 standard deviations above the mean
What was the standardized score (z-score) for a student who scored 500 on the SAT with a
mean of 490 and a standard deviation of 110? - Answer D. 0.09
Which of the following statements about the correlation r are true? - Answer E. I and III
If the correlation between two variables is close to 0, you can conclude that the scatterplot
would show - Answer C. no straight-line pattern, but there might be a strong pattern of
another form
The points on a scatterplot lie very close to a straight line. The correlation between x and y is
close to - Answer C. Either -1 or 1, we can't say which.
A statistics student decides to compute the correlation between two quantitative variables. She
finds r = 0.06. She concludes there is no relationship between the variables. Is she correct? -
Answer D. No - correlation signals a linear relationship, so other types of relations can exist,
she said there was NO relationship.
In a scatterplot of the average price of a barrel of oil and the average retail price of gasoline, you
