For these project assignments throughout the course you will need to reference the data in the ROI Excel spreadheet. Download it here.
Using the ROI data set:For each of the two majors:
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Draw the scatter diagram of Y = ‘Annual % ROI’ against X = ‘Cost’.
Obtain b0 and b1 of the regression equation defined as y ̂ = b0 + b1X and the coefficient of determination (r2) from the Excel regression output.
Draw the fitted regression line on the scatter diagram.
Calculate the estimated ‘Annual % ROI’ when the ‘Cost’ (X) is $160,000.
Test the hypothesis:
o H0: β1 = 0
o Ha: β1 ≠ 0
Write a paragraph or more on any observations you make about the regression estimates, coefficient of determination, the plots, and the results of your hypothesis tests.
Grading Criteria Assignments
Maximum Points
Meets or exceeds established assignment criteria
40
Demonstrates an understanding of lesson concepts
20
Clearly presents well-reasoned ideas and concepts
30
Uses proper mechanics, punctuation, sentence structure, and spelling
10
Total
100
