This book is about regression and modeling—one of the most widely used techniques in analyzing and solving real-world problems. Regression analysis is used to investigate the relationship between two or more variables. Often we are interested in predicting one variable using one or more variables. For example, we might be interested in the relationship between two variables: sales and profit for a chain of stores, number of hours required to produce certain number of products, number of accidents versus blood alcohol level, advertising expenditures and sales, or the height of parents compared to their children. In all these cases, regression analysis can be applied to investigate the relationship between the variables.
The book is divided ...
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