QNT 275 WEEK 4 QUIZ
QNT 275 WEEK 4 QUIZ Buy Solutions: http://hwsoloutions.com/downloads/qnt-275-week-4-quiz/ QNT 275 week 4 quiz Consider the following simple linear regression model: The response variable is: β0 y x ε The standard error of the estimate measures: the variability of the values of the sample regression coefficients. the variability of the observed y-values around the predicted y-values. the variability of the predicted y-values around the mean of the observed y-values. the variability of the explanatory variables. Consider the following simple linear regression model: β0 and β1 are: the explanatory variables. the random error terms. the response variables. the unknown parameters. Another name for an explanatory variable is the ___. dependent variable independent variable inferred variable descriptive variable For a given set of explanatory variables in general: the width of a confidence interval is the same as the width of a prediction interval. a confidence interval is wider than a prediction interval. a confidence interval is narrower than a prediction interval. The width of a confidence interval cannot be determined. 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? Infinity +1 0 -1 What is the name of the variable that’s used to predict another variable? Explanatory Standard Error of the Estimate Coefficient of Determination Response Serial correlation is typically observed in: cross-sectional data. time series data. sparse data. outliers. Which of the following violates the assumptions of regression analysis? The error term is correlated with an explanatory variable. The error term has a zero mean. The error term is normally distributed. The error term has a constant variance. Which of the following variables is not qualitative? Gender of a person Student’s status (freshman, sophomore, etc.) Religious affiliation Number of dependents claimed on a tax return QNT 275 WEEK 4 QUIZ QNT 275 week 4 quiz Consider the following simple linear regression model: The response variable is: β0 y x ε The standard error of the estimate measures: the variability of the values of the sample regression coefficients. the variability of the observed y-values around the predicted y-values. the variability of the predicted y-values around the mean of the observed y-values. the variability of the explanatory variables. Consider the following simple linear regression model: β0 and β1 are: the explanatory variables. the random error terms. the response variables. the unknown parameters. QNT 275 WEEK 4 QUIZ Another name for an explanatory variable is the ___. dependent variable independent variable inferred variable descriptive variable For a given set of explanatory variables in general: the width of a confidence interval is the same as the width of a prediction interval. a confidence interval is wider than a prediction interval. a confidence interval is narrower than a prediction interval. The width of a confidence interval cannot be determined. 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? Infinity +1 0 -1 QNT 275 WEEK 4 QUIZ What is the name of the variable that’s used to predict another variable? Explanatory Standard Error of the Estimate Coefficient of Determination Response Serial correlation is typically observed in: cross-sectional data. time series data. sparse data. outliers. Which of the following violates the assumptions of regression analysis? The error term is correlated with an explanatory variable. The error term has a zero mean. The error term is normally distributed. The error term has a constant variance. QNT 275 WEEK 4 QUIZ Which of the following variables is not qualitative? Gender of a person Student’s status (freshman, sophomore, etc.) Religious affiliation Number of dependents claimed on a tax return QNT 275 WEEK 4 QUIZ QNT 275 WEEK 4 QUIZ QNT 275 WEEK 4 QUIZ QNT 275 WEEK 4 QUIZ QNT 275 WEEK 4 QUIZ QNT 275 WEEK 4 QUIZ
