Relationship Between Variables
When analyzing phenomena that are affected by other variables, it is necessary to account for contributing factors. Although the association between variables can be complex and of unknown structure, in most cases, it is possible to approximate the relationship using a linear model or models that can be linearized. There are well-established procedures for modeling quantitative and qualitative variables. One such technique is called regression analysis.
In regression analysis, one variable, known as the dependent variable, is explained by one or more variables known as independent, or explanatory, variables. Before presenting a regression model, an examination of a simple model ...
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