Roller coaster people who responded to a july 2004, Ask an Expert

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Roller coaster.

People who responded to a July 2004 Discovery Channel poll named the 10 best roller coasters in the United States. A table in the last chapter's exercises shows the length of the initial drop (in feet) and the duration of the ride (in seconds). A regression to predict Duration from Drop has R2 = 12.4%.

a) What are the variables and units in this regression?

b) What units does the slope have?

c) Do you think the slope is positive or negative? Explain.

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