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Unformatted text preview: 13 1Chapter ThirteenLinear Regression and CorrelationLinear Regression and CorrelationGOALSONEUnderstand and interpret the terms dependentvariable and independent variable.TWOCalculate and interpret the coefficient of correlation, the coefficient of determinationTHREECalculate the least squares regression line and interpret the slope and intercept values.Goals13 2Correlation AnalysisCorrelation AnalysisCorrelation Analysisis a group of statistical techniques to measure the association between two variables.A Scatter DiagramScatter Diagramis a chart that portrays the relationship between two variables.Advertising Minutes and $ Sales510152025307090110130150170190Advertising MinutesSales ($thousands)13 3Correlation AnalysisThe Independent Independent VariableVariableprovides the basis for estimation. It is the predictor variable.Calories consumedCorrelation AnalysisCorrelation Analysisis a group of statistical techniques to measure the association between two variables.The Dependent Dependent VariableVariableis the variable being predicted or estimated....
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 Spring '07
 Guggenberger

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