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Mathematics 20 Online
OpenStudy (anonymous):

SOMEONE PLEASE HELP! MEDAL REWARDED! Which of these pairs of variables would you expect to be represented by a scatterplot with a positive correlation? A. The depth of the water in a pond and the amount of rainfall. B. The number of miles driven and the number of people on the bus. C. A person's height and the person's grade on the math test. D. The number of concert tickets purchased and the number of concert tickets still available for purchase.

OpenStudy (anonymous):

its either A, or B, which one?

OpenStudy (anonymous):

@trantom

OpenStudy (trantom):

A, because a positive correlation means as one goes up, so does the other. If there is more rainfall, the depth of the pond increases. Therefore A is the positive correlation. Now, for B it COULD be a positive correlation, but not necessarily. A is DEFINITELY a positive correlation.

OpenStudy (trantom):

also positive correlations mean that if one goes down, the other goes down.

OpenStudy (anonymous):

awesome!

OpenStudy (trantom):

wow I have gotten four medals today !!!

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