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1. Does a low value of r between two variables necessarily indicate that there is very little association between them? Explain.

2. The personnel director for the Miniscule Corporation often lunches with her counterpart for the Megasize Corporation. This noon she mentions her difficulty in selecting workers for an assembly line. Her friend says that she's had good results with the Acme Aptitude Test: Among 400 workers, score on the test correlated .77 with performance on the job. What caution might you offer the Minuscule director before she rushes out to buy the test?

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Statistics and Probability, Statistics

Category:- Statistics and Probability
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