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DAT 565Wk 5 Discussion Answers
Due Thursday
Due Thursday
Respond to the following in a minimum of 175 words:
- Construct a scatter plot with this data.
- Do you observe a relationship between both variables?
- Use Excel to fit a linear regression line to the data. What is the fitted regression model? (Hint: You can follow the steps outlined on page 497 of the textbook.)
- What is the slope? What does the slope tell us? Is the slope significant?
- What is the intercept? Is it meaningful?
- What is the value of the regression coefficient,r? What is the value of the coefficient of determination, r^2? What does r^2 tell us?
- Use the model to predict sales and the business spends $950,000 in advertisement. Does the model underestimate or overestimates ales?
Due Monday
Reply to at least 2 of your classmates or your faculty member. Be constructive and professional.
Copyright 2020 by University of Phoenix. All rights reserved.
DAT 565Wk 5 Discussion Answers
Copyright 2020 by University of Phoenix. All rights reserved.
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