Test a theoretical framework using regression
The hierarchical regression analysis occurs in iterations. The first iteration will be with the most highly correlated variable to the outcome, then subsequently add in other variables that have some sort of association or mitigating effect on the outcome to see what happens. If entry of a variable leads to a significant increase in R-squared as per the F-statistic, then evidence of its predictive ability can be noted. Other iterations of variable entry occur until the best group of variables that accounts for the most shared variance in the outcome is found. Once all iterations are run with all variables interacting or being thrown out, a much more tangible argument for multivariate associations can be made.
Statistician Services for Students
Eric Heidel, Ph.D. will provide the following services for undergraduate and graduate students at $50/hour. Secure checkout is available with Stripe or PayPal.
- Statistical Analysis
- Research Design
- Sample Size Calculations
- Diagnostic Testing and Epidemiological Calculations
- Survey Design and Psychometrics
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