Chapter 5 AP Stats Review

Quiz
•
Mathematics
•
12th Grade
•
Hard
Anthony Clark
FREE Resource
15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the distributions displayed in the dot plots below has the highest standard deviation?
Distribution A
Distribution B
Distribution C
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following statements about the slope of the least-squares regression line is true?
It has the same sign as the correlation coefficient r.
The square of the slope equals the proportion of the variation in the response variable that is explained by the explanatory variable.
It is unitless.
When the x-variable is 0, this is what the y-variable is predicted to be.
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
One of the following is a correct statement involving correlation. The other three contain blunders. Which one is correct?
The correlation between the gas mileage of a car and its weight is r = -0.71 gallon-pounds.
The correlation between GPA and hours of sleep per night is r = 1.06.
There is a correlation of r = 0.54 between the position a football player plays and his or her weight.
The correlation between amount of fertilizer and pounds of tomatoes harvested was found to be r = 0.33.
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A study showed that students who spend more time studying for statistics tests tend to achieve better scores on their tests. In fact, the number of hours studied turned out to explain 81% of the observed variation in test scores among the students who participated in the study. What is the value of the correlation between number of hours studied and test score?
r = 0.81
r = 0.656
r = 0.9
There is no way to know.
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
If you graphed height as the explanatory variable and weight as the response variable, what would happen to the LSRL and r if you had accidently graphed the weight as the explanatory variable and the height as the response variable?
LSRL would be different and r would be different
LSRL would be different and r would stay the same
LSRL would stay the same and r would be different
LSRL would stay the same and r would stay the same
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The equation of a regression line is y = 0.5x + 35 where x is father’s height in inches and y is son’s height in inches. For a father who is 72 inches tall, what would we predict for the son’s height?
69 inches
71 inches
72 inches
74 inches
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The mean of a distribution that is skewed to the left is smaller than the median.
True
False
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