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Chapter 4: Q. 4.13 (page 189)

To determine whether ris positive, negative, or zero.

Short Answer

Expert verified

The rwill be positive

Step by step solution

01

Given Information

To determine whether ris positive, negative, or zero.

02

Explanation

We can observe from the graph that the values of yrise as the values of xrise, indicating that the linear correlation coefficient ris positive.

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Most popular questions from this chapter

Determine the linear correlation coefficient by formula and definition.

A value ofrcloses to -----indicates that the regression equation is is extremely useful for making predictions.

Determine the linear correlation coefficient by formula and definition.

a) Plot the data points and the first linear equation on one graph and the data points and the second linear equation on another.

(b) Construct tables for x,y,e,e2,y^

(c) Determine which line fits the data points better according to the least-square criterion.

A value of rclose to -1suggests a strong------ linear relationship between the variables.
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