Question: What makes r -1? Consider the data: x 1 3 5 7 9 y 17 11 10 -1 -7 a. Sketch a

What makes r  -1? Consider the data:

x  1 3 5 7 9 y  17 11 10 -1 -7

a. Sketch a scatterplot.

b. If one pair of (x, y) values is removed, the correlation for the remaining four pairs equals -1. Which pair has been removed?

c. If one y value is changed, the correlation for the five pairs equals -1. Identify the y value and how it must be changed for this to happen.

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