Stats: Modeling the World Nasta Edition Grades 9-12
Stats: Modeling the World Nasta Edition Grades 9-12
3rd Edition
ISBN: 9780131359581
Author: David E. Bock, Paul F. Velleman, Richard D. De Veaux
Publisher: PEARSON
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Chapter 7, Problem 20E
To determine

To explain to the researcher how the scatterplot could still reveal the strong association he anticipated.

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A researcher investigating the association between two variables, collected some data.

We will explain to him that, the correlation would only show if there was a strong linear association between the two variables, but if the researcher had seen a strong parabolic relationship instead between the two variables, he would have seen that the correlation would be close to zero. Therefore, the correlation would not be able to accurately describe an association with a parabolic relationship.

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