Note using the term stratified random sample is

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Unformatted text preview: ). A two factor design that includes randomization rather than a block is considered partially correct. Note, using the term “stratified random sample” is considered extraneous and is not sufficient for an explanation of how randomization occurs in the new design. Incorrect if all the response mentions is now having four groups of data to analyze. (No randomization, not even a reference to the randomization in (a), and no clear separation of the groups in the design.) NOTE: If no randomization is specified anywhere, the highest possible score is a 2. 4 Complete Response Both parts essentially correct. 3 Substantial Response Part (a) is essentially correct and part (b) is partially correct. OR Part (a) is partially correct and part (b) is essentially correct. Copyright © 2002 by College Entrance Examination Board. All rights reserved. Advanced Placement Program and AP are registered trademarks of the College Entrance Examination Board. 10 AP® STATISTICS 2002 SCORING GUIDELINES (Form B) Question 3 (cont’d.) 2 De...
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