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Question Description

QUESTION 1

  1. Interpret what the slope in this equation means?
    For every increase of one unit in x, there is an increase of .514 in predicted y.
    For every increase of one unit in y, there is an increase of .514 in predicted x.
    For every increase of one unit in x, there is an decrease of .514 in predicted y.
    For every increase of one unit in y, there is an decrease of .514 in predicted x.

2 points

QUESTION 2

  1. What is the linear regression equation for the old process? Round the intercept to one decimal place and the slope to three decimal places.

2 points

QUESTION 3

  1. What is the coefficient of variation for the new process?

2 points

QUESTION 4

  1. How much did the process performance change on the average? (Hint: Compare the values of b1 and the average of new process performance minus the average of the performance of the old process.)

4 points

QUESTION 5

  1. Interpret the coefficient of variation for the new process.

2 points

QUESTION 6

  1. What is the linear regression equation for the new process? Round the intercept to one decimal and the slope to three decimal places.

2 points

QUESTION 7

  1. What is the interpretation of the y-intercept in the liner regression equation?
    That is the standard deviation of the equation.
    That is the starting value given the absence of the response variable.
    That is the starting value given the absence of the explanatory variable.
    This variable has no value.

2 points

QUESTION 8

  1. What is the coefficient of variation for the old process?

2 points

QUESTION 9

  1. Interpret what the slope in this equation means?
    For an increase of one unit in x, there is a decrease of .570 unit in predicted y.
    For an increase of one unit in x, there is a increase of .570 unit in predicted y.
    For an increase of one unit in y, there is a decrease of .570 unit in predicted x.
    For an increase of one unit in y, there is a increase of .570 unit in predicted x.

2 points

QUESTION 10

  1. Comparing the old process to the new process was there an increase or decrease relative to the time spent?
    no change
    decrease
    increase

2 points

QUESTION 11

  1. 1.What was the average effect of the process change? Did the process average increase or decrease and by how much?

2 points

QUESTION 12

  1. Interpret the coefficient of variation for the old process.

2 points

QUESTION 13

  1. What is the correlation coefficient for the new process?

2 points

QUESTION 14

  1. What is the correlation coefficient for the old process? Round your answer to three decimals.

2 points

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