Multiple Choice
Professor Izadi is interested in the association between sleep and cognitive performance.He surveyed his students about the number of hours they slept the night before the exam and then correlated these scores with their test grades.He found a +.81 correlation between these two variables.What does this result mean?
A) There is a high negative correlation between sleep and exam performance.
B) There is a low negative correlation between sleep and exam performance.
C) There is a high positive correlation between sleep and exam performance.
D) There is a low positive correlation between sleep and exam performance.
Correct Answer:
Verified
Correct Answer:
Verified
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