QUESTIONS ARE ON THE M9 FILE
You will match numerical values of the correlation

QUESTIONS ARE ON THE M9 FILE
You will match numerical values of the correlation coefficient to scatterplots. You will 
identify third variable issues given scenarios and you will use the output of regression 
programs to assess third variable threats to claims.
Find the ‘candy and violence’ articles here (Part 1 is the scholarly article; Part 2 is the 
popular press rendering of the same study)
RUBRIC
1a, claim
1 pts
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1 pts
1b. Two plausible explanations
2 pts
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2 pts
1c. Why not experiment?
2 pts
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2 pts
2. Which coders?
1 pts
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1 pts
3. Which correlation coefficient? (1 per graph)
4 pts
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4 pts
4a. IV and DV
3 pts
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3 pts
4b. Predict confidence given 2.5 beers
1 pts
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1 pts
4c. Interpret beta weight
1 pts
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1 pts
5. Effect of attractiveness on confidence
2 pts
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2 pts
5. Effect of beer on confidence
2 pts
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2 pts
5. Rule out attractiveness as third variable?
1 pts
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0 pts
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1 pts