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Assessing the Goodness of Fit of a Regression Line Involves

Question 48

Essay

Assessing the goodness of fit of a regression line involves considering several things, and no single characteristic of data is sufficient for a good assessment. Consider the characteristics below. How does each contribute to an assessment of fit? That is, for each piece of information, what about it would indicate a "good" best-fit line?
a)The shape of the residual plot
b)The correlation coefficient
c)The demonstration of seriously influential points
d)The coefficient of determination

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a)A uniform cloud of points with no appa...

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