For each problem, select the best response. (a) You have data for many years on the average price of a barrel of oil and the average retail price of a gallon of unleaded regular gasoline. When you make a scatterplot, the explanatory variable on the x-axis ○ A. is the price of gasoline. B. is the price of oil. C. can be either oil price or gasoline price. O D. None of the above. (b) What are all the values that a correlation r can possibly take? ○ A. r≥0 ○ B. 0 ≤r≤1 C.-1
For each problem, select the best response. (a) You have data for many years on the average price of a barrel of oil and the average retail price of a gallon of unleaded regular gasoline. When you make a scatterplot, the explanatory variable on the x-axis ○ A. is the price of gasoline. B. is the price of oil. C. can be either oil price or gasoline price. O D. None of the above. (b) What are all the values that a correlation r can possibly take? ○ A. r≥0 ○ B. 0 ≤r≤1 C.-1
Chapter3: Polynomial Functions
Section3.5: Mathematical Modeling And Variation
Problem 71E
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Transcribed Image Text:For each problem, select the best response.
(a) You have data for many years on the average price of a barrel of oil and the average retail price of a gallon of unleaded regular
gasoline. When you make a scatterplot, the explanatory variable on the x-axis
A. is the price of gasoline.
B. is the price of oil.
C. can be either oil price or gasoline price.
D. None of the above.
(b) What are all the values that a correlation r can possibly take?
A. r≥ 0
B. Or≤1
C.-1≤r≤1
D. None of the above.
(c) If the correlation between two variables is close to 0, you can conclude that a scatterplot would show
A. no straight-line pattern, but there might be a strong pattern of another form.
B. a cloud of points with no visible pattern.
C. a strong straight-line pattern.
D. None of the above.
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