Exam 18: Correlation and Regression

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A technique for fitting a straight line to a scattergram by minimizing the vertical distances of all the points from the line is called the most-squares procedure.

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All of the following about multiple regression are true EXCEPT:

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The ________ coefficient is the slope obtained by the regression of y on x when the data are standardized.

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In a short essay,define regression analysis and discuss at least four ways in which regression analysis can be used.

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To estimate the accuracy of predicted values,it is useful to calculate the standard error of estimate.

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Standardization may be desirable because it is easier to compare the beta coefficients than it is to compare the raw coefficients.

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The vertical distance from a point to the regression line is the squared error,eⱼ².

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According to the text,a scatter diagram is also known as a scattergram.

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All of the following are terms used in regression analysis that arise from the mathematical relationship between the variables EXCEPT:

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In a short essay,discuss the characteristics of bivariate regression.

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The process by which the raw data are transformed into new variables that have a mean of 0 and a variance of 1 is called standardization.

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