Chapter 4: Q. 10 (page 192)
10. The line that best fits a set of data points according to the least-squares criterion is called the________line.
The line that best fits a set of data points according to the least-squares criterion is called the regression line.
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Fill in the blanks.
a. In the context of regression, an_______ is a data point that lies far from the regression line, relative to the other data points.
b. In regression analysis, an_______ is a data point where removal causes the regression equation to change considerably:
The linear correlation coefficient is also known by another name. what is it?
9. Based on the least-squares criterion, the line that best fits a set of data points is the one with the ________possible sum of squared errors.
For each exercise, determine the linear correlation coefficient by using
a. Definirina on page ,
b. Formula on page .
Compare year annex an para (a) and (b
Determine the linear correlation coefficient by formula and definition.
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