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(a) What are all the values that a correlation r can possibly take? OA.r≥ 0 B. 0 < r ≤ 1 OC.-1≤r≤ 1 OD. None of the above.

(a) What are all the values that a correlation r can possibly take? OA.r≥ 0 B. 0 < r ≤ 1 OC.-1≤r≤ 1 OD. None of the above.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter4: Equations Of Linear Functions
Section4.5: Correlation And Causation
Problem 2CYU
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(a) What are all the values that a correlation r can possibly take? A.r≥ 0 B. 0 < r ≤ 1 C. -1 ≤ r ≤ 1 D. None of the above. (b) 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 oil. B. can be either oil price or gasoline price. C. is the price of gasoline. 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. a cloud of points with no visible pattern. B. no straight-line pattern, but there might be a strong pattern of another form. C. a strong straight-line pattern. D. None of the above.
Transcribed Image Text:(a) What are all the values that a correlation r can possibly take? A.r≥ 0 B. 0 < r ≤ 1 C. -1 ≤ r ≤ 1 D. None of the above. (b) 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 oil. B. can be either oil price or gasoline price. C. is the price of gasoline. 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. a cloud of points with no visible pattern. B. no straight-line pattern, but there might be a strong pattern of another form. C. a strong straight-line pattern. D. None of the above.
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