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Unformatted text preview: for why gender does not have a strong differential
effect on the outcome. Copyright © 2002 by College Entrance Examination Board. All rights reserved.
Advanced Placement Program and AP are registered trademarks of the College Entrance Examination Board. 8 AP® STATISTICS
2002 SCORING GUIDELINES (Form B)
Question 3 (cont’d.) Separate
2 blocks by Block 1
of females Random
of males Magnets
(or Placebo) Measure and
level of pain
level of pain Scoring
Part (a) is
Essentially correct if all three of the following are adequately addressed:
treatments, random assignment, and response variable.
It is acceptable for them to select the first group with an SRS, but only if it’s
clear that the remaining subjects are automatically assigned to the second
treatment group as opposed to taking a separate SRS.
Note, if they describe a randomization scheme that results in an unequal number
of subjects in each treatment group or does not involve randomization for each
individual (such as flipping a coin t...
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