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1Consider the following simple linear regression model:  The response variable is:  [removed]β0[removed]ε[removed]y[removed]x 2. Which of the following violates the assumptions of regression analysis? [removed]The error term has a zero mean.[removed]The error term has a constant variance.[removed]The error term is correlated with an explanatory variable.[removed]The error term is normally distributed. 3.For a given set of explanatory variables, in general: [removed]the width of a confidence interval is the same as the width of a prediction interval.[removed]a confidence interval is narrower than a prediction interval.[removed]a confidence interval is wider than a prediction interval.[removed]The width of a confidence interval cannot be determined. 4. Consider the following simple linear regression model:   β0 and β1 are: [removed]the response variables.[removed]the explanatory variables.[removed]the unknown parameters. [removed]the random error terms. 5 .What is the name of the variable that’s used to predict another variable? [removed]Standard Error of the Estimate[removed]Response[removed]Explanatory[removed]Coefficient of Determination6.In a simple linear regression model, if the plots on a scatter diagram lie on a straight line, what is the standard error of the estimate? [removed]+1[removed]-1[removed]0[removed]Infinity 7.The standard error of the estimate measures: [removed]the variability of the explanatory variables.[removed]the variability of the predicted y-values around the mean of the observed y-values.[removed]the variability of the observed y-values around the predicted y-values.[removed]the variability of the values of the sample regression coefficients.8.Serial correlation is typically observed in: [removed]outliers.[removed]time series data.[removed]sparse data.[removed]cross-sectional data.9.Which of the following variables is not qualitative? [removed]Student’s status (freshman, sophomore, etc.)[removed]Religious affiliation[removed]Gender of a person[removed]Number of dependents claimed on a tax return 10.Another name for an explanatory variable is the ___.  [removed]independent variable[removed]descriptive variable[removed]dependent variable[removed]inferred variable

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Quiz Need answers in 1 hour Answers 1Bids 0Other questions 10,Quiz Need answers in 1 hour Answers 1Bids 0Other questions 10
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