Multiple Regression Analysis - Determine the objectives of MRA
6 important questions on Multiple Regression Analysis - Determine the objectives of MRA
Within the objectives stage, we check the aim of the MRA (prediction vs explanation) (whether it's appropriate to use MRA or not), we specify statistical relationships and select independent and dependent variables. What is the difference between the aims prediction vs explanation?
Explanation; interested in the lineair dependencies between different independent variables and the dependent variable. You check the importance of the independent variables, types of relationships found or the interrelationships among the independent variables.
When specifying the statistical relationship, we check whether the relationships have lineair forms. What should we do when we do not have lineair forms?
What are the two characteristics of a statistical relationship?
2. Error in the dependent variable is assumed to be random.
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What is the difference between SEM and MRA regarding error?
What is omitted bias, what is its impact and how can this be avoided?
You can avoid omitted bias by trying out MRA for also irrelevant variables.
What are curvilinear relationships?
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