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-10- 2008 AP® STATISTICS FREE-RESPONSE QUESTIONS (Form B)
(a) A scatterplot of the ordered pairs (swelling in left foot, swelling in right foot), is shown below. The scatterplot suggests there are two distinct groups of patients. Patients within each group share a common
trait. Use the scatterplot above and the table on page 10 to determine the common trait and explain how this
trait differs for the two groups.
(b) A scatterplot of the ordered pairs (swelling in dominant foot, swelling in nondominant foot), is shown
below. What conclusion can be drawn from this scatterplot that is not apparent from the scatterplot in part (a) ? © 2008 The College Board. All rights reserved.
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