Exam 13: Simple Linear Regression

In the regression model , is the:

The random error for the sample regression model,denoted by e,is equal to the:

Use the following to answer questions : The table shown below gives six pairs of x and y values. -For the regression of y on x,the values of a and b,rounded to two decimal places,are:

Use the following to answer questions : The following table lists the ages (in years)and the prices (in thousands of dollars)by a sample of six houses. -The standard deviation of errors for the regression of y on x,rounded to three decimal places,is:

Use the following to answer questions : For a sample of 17 values of x and y, 127, -99,and b = -0.91. -The standard deviation of errors for the regression of y on x,rounded to three decimal places,is:

Use the following to answer questions : For a data set of 8 values of x and y,the value of = 180,the standard deviation of errors for the regression of y on x is 9.237,and the value of b is -6.28. For the purpose of running a hypothesis test,the null hypothesis is that the slope of the population regression line of y on x is zero and the alternative hypothesis is that the slope of this population regression line is less than zero.The significance level is 1%. -What is the value of the test statistic,t,rounded to three decimal places?

The regression model assumes that the spread of points around the regression line is:

Use the following to answer questions : For a data set of 8 values of x and y,the value of = 180,the standard deviation of errors for the regression of y on x is 9.237,and the value of b is -6.28. For the purpose of running a hypothesis test,the null hypothesis is that the slope of the population regression line of y on x is zero and the alternative hypothesis is that the slope of this population regression line is less than zero.The significance level is 1%. -The 99% confidence interval for the slope,B,of the population regression line is:

In a regression model,the random error term is included to capture the effects of the:

Use the following to answer questions : For a sample of 19 values of x and y, 294, 502,and b = 0.27. -The standard deviation of errors for the regression of y on x,rounded to three decimal places,is:

Use the following to answer questions : The following table lists the monthly incomes (in hundreds of dollars)and the monthly rents paid (in hundreds of dollars)by a sample of six families. -The coefficient of determination for the regression of y on x,rounded to three decimal places,is:

Use the following to answer questions : The following table lists the monthly incomes (in hundreds of dollars)and the monthly rents paid (in hundreds of dollars)by a sample of six families. -The 99% confidence interval for the slope,B,of the population regression line is:

Use the following to answer questions : For a sample of 17 values of x and y, 127, -99,and b = -0.91. -The coefficient of determination for the regression of y on x,rounded to three decimal places,is:

Use the following to answer questions : For a sample of 22 values of x and y, 746, 254,and b = 1.36. -The standard deviation of errors for the regression of y on x,rounded to three decimal places,is:

Use the following to answer questions : The following table lists the monthly incomes (in hundreds of dollars)and the monthly rents paid (in hundreds of dollars)by a sample of six families. -Suppose we have information on the monthly incomes and the monthly rents paid by a sample of families.In the regression of monthly rent paid on the monthly income for these data,the value of a will represent:

Use the following to answer questions : The following table lists the monthly incomes (in hundreds of dollars)and the monthly rents paid (in hundreds of dollars)by a sample of six families. -The values of and ,rounded to three decimal places,are:

The value of :

In a regression model,the y-intercept is the:

A perfect positive correlation means:

The value of the coefficient of determination is always: