A scatterplot contains four points: (2,2), (1,1), (0,0), and (1,1). A fifth point

Chapter 7, Problem 14

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A scatterplot contains four points: \((-2,-2)\), \((-1,-1)\), (0,0), and (1,1). A fifth point, \((2,y)\), is to be added to the plot. Let r represent the correlation between x and y.

a. Find the value of y so that \(r=1\).

b. Find the value of y so that \(r=0\).

c. Find the value of y so that \(r=0.5\).

d. Find the value of y so that \(r=−0.5\).

e. Give a geometric argument to show that there is no value of y for which \(r=-1\).

Equation Transcription:

Text Transcription:

(-2,-2)

(-1,-1)

(0,0)

(1,1)

(2,y)

r=1

r=0

r=0.5

r=-0.5

r=-1

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