Question

What are all the values that a correlation r can possibly take? A. 0 ≤ r ≤ 1 B. r ≥0 C. -1 ≤ r ≤ 1 D. None of the above. (b) 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 strong straight-line pattern. C. a cloud of points with no visible pattern. D. None of the above. (c) In a scatterplot of the average price of a barrel of oil and the average retail price of a gallon of gasoline, you expect to see A. a positive association. B. very little association. C. a negative association. D. None of the above.

          What are all the values that a
correlation r can possibly take?
A. 0 ≤ r ≤ 1
B. r ≥0
C. -1 ≤ r ≤ 1
D. None of the above.
(b) 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 strong straight-line pattern.
C. a cloud of points with no visible
pattern.
D. None of the above.
(c) In a scatterplot of the average price of a barrel of oil and
the average retail price of a gallon of gasoline, you expect to
see
A. a positive association.
B. very little association.
C. a negative association.
D. None of the above.

Added by Alicia P.

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