May 29, 2016

Homework Help: Statistics

Posted by Tab on Wednesday, January 26, 2011 at 4:30pm.

9. It is thought that prehistoric Indians did not take their best tools, pottery, and household items when they visited higher elevations for their summer camps. It is hypothesized that archaeological sites tend to lose their cultural identity and specific cultural affiliation as the elevation of the site increases. Let x be the elevation (in thousands of feet) for an archaeological site in the southwestern United States. Let y be the percentage of unidentified artifacts (no specific cultural affiliation) at a given elevation. Suppose that the following data were obtained for a collection of archaeological sites in New Mexico:

What percentage of the variation in y can be explained by the corresponding variation in x and the least-squares line?

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