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Quantitative Business Analysis
Correlation, simple linear, and Multiple Regression Analysis
Multiple regression analysis is widely used in business research in order to forecast and predict purposes. It is also used to determine what independent variables have an influence on dependent variables, such as sales.
Sales can be attributed to quality, customer service, and location. In multiple regression analysis, we can determine which independent variable contributes the most to sales; it could be quality or customer service or location.
Now, consider the following scenario. You have been assigned the task of creating a multiple regression equation of at least three variables that explains Microsoft's annual sales.
Use a time series of data of at least 10 years. You can search for this data using the Internet.
In a sample of 120 people, 50 indicated that they prefer domestic automobiles, 60 said they prefer foreign-made cars, and 10 indicated no difference in their preference. At a 0.05 level of significance, determine if there is evidence of a s..
Please read through the case scenario shown below to gain an understanding of the background information and the research study
Suppose the number of days it takes you to get a flu shot
Give the 95% confidence interval.
Calculate variance of a poisson random variable?
Why do we care whether the assumptions required for statistical tests are met?
What other factors besides price might be included in this equation and do you foresee any difficulty in obtaining these additional data or incorporating them in the regression analysis?
State a research question for which a single-group post-test only design can yield relatively unambiguous findings.
"Range of optimality" describes the impact of simultaneous changes in objective function values and right-hand-side values.
The HR department at a certain company was asked to develop a financial planning model that would help employees address how much their portfolios would be worth in 10 years, 20 years, and when they retire. John was asked to lead this effort a..
Calculate the sample size needed given these factors
We expect to have a positive relationship between Advertising and Demand.
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