Question

h. One of the store managers regularly likes to keep 8 tills open on Saturdays. Use the equation of the regression line to provide the manager with the predicted time to check out if 8 tills are open. i. Which of the following cannot be answered from the regression equation? Clearly circle only one response. A. A prediction of the value of y at a particular value of x. B. An estimate of the slope between y and x. C. An estimate of whether the linear association between variables is positive or negative. D. An estimate of whether the association between variables is linear or non-linear. j. In a sentence or two, describe what information the standard deviation of errors provides. k. When the correlation between x and y is -1.0, what will the standard deviation of errors be? Why is this?

          h. One of the store managers regularly likes to keep 8 tills open on Saturdays. Use the equation of the regression line to provide the manager with the predicted time to check out if 8 tills are open. i. Which of the following cannot be answered from the regression equation? Clearly circle only one response. A. A prediction of the value of y at a particular value of x. B. An estimate of the slope between y and x. C. An estimate of whether the linear association between variables is positive or negative. D. An estimate of whether the association between variables is linear or non-linear. j. In a sentence or two, describe what information the standard deviation of errors provides. k. When the correlation between x and y is -1.0, what will the standard deviation of errors be? Why is this?

h. One of the store managers regularly likes to keep 8 tills open on Saturdays. Use the equation of the regression line to provide the manager with the predicted time to check out if 8 tills are open. i. Which of the following cannot be answered from the regression equation? Clearly circle only one response. A. A prediction of the value of y at a particular value of x. B. An estimate of the slope between y and x. C. An estimate of whether the linear association between variables is positive or negative. D. An estimate of whether the association between variables is linear or non-linear. j. In a sentence or two, describe what information the standard deviation of errors provides. k. When the correlation between x and y is -1.0, what will the standard deviation of errors be? Why is this?

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