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Unformatted text preview: e Examination Board. 9 AP® STATISTICS
2002 SCORING GUIDELINES (Form B)
Question 3 (cont’d.)
Part (b) is
Essentially correct if either of the two acceptable approaches is taken (no and why OR
yes and how) and the explanation/justification is clear and complete. For a yes,
the response must clearly indicate and maintain the group separation and specify
the separate randomization within each group.
Partially correct if either of the two acceptable approaches is taken, but the
explanation/justification is weak. For example, the response states yes but it is
not clear a separate randomization within each block is carried out, or the
response states no but does not fully appeal to the randomization in part (a) or
only states that gender does not matter and does not clearly state gender does not
matter and why the groups will still be sufficiently balanced.
If done well, the response can appeal to the randomization in part (a) (“divide
and proceed for each subgroup” vs. “divide and proceed...
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