MSCI212: STATISTICAL METHODS FOR BUSINESS
加拿大商科代写 This week’s questions concern regression model building in SPSS. In answering these questions you should assume that the…
Week 9 Workshop 加拿大商科代写
This week’s questions concern regression model building in SPSS. In answering these questions you should assume that the models are valid, and hence that the p-values etc are meaningful.
Question 1 (Based on S&F Chapter 24, Exercise 32): Data is collected on the Sales ($) for 283 fuel stations which sell fuel, have a convenience store and a car wash. The basic descriptive statistics are provided below, with Sales in dollars, fuel volume in gallons, and the number of car washes sold. 加拿大商科代写
Multiple scatterplots, correlations and the results of a Stepwise Regression are all provided below.
a) Explain carefully the relationships you see in the Scatterplots. Do these make sense?
b) Explain carefully the relationships you see in the Correlations. Do these make sense?
c) Carefully explain the outputs from Stepwise regression below. What model is SPSS recommending, and why? Justify the model in as many ways as possible.
Question 2 (Based on S&F Chapter 24, Exercise 35): Data is collected on the Prices ($’000) for 150 homes, together with the total floor area of the house (sq feet) and the number of bathrooms. The basic descriptive statistics are provided below. 加拿大商科代写
Muliple scatterplots, correlations and the results of a Stepwise Regression are all provided below.
a) Explain carefully the relationships you see in the Scatterplots. Do these make sense?
b) Explain carefully the relationships you see in the Correlations. Do these make sense?
c) Carefully explain the outputs from Stepwise regression below. What model is SPSS recommending, and why?
