DavidEllison
David Ellison
Recently Published
Principal Component Analysis (PCA) Tutorial
A brief introduction to PCA's using R
Cumulative Growth Example
Useful for year-over-year growth and related compounding situations
Fixed and Random Effects Model (Part 2 of 2 Mixed Effect Model)
This is part 2 of 2 tutorials on mixed effects models adapted from Bodo Winter of the University of California. See citations at the end for more information
Multiple Regression Model (Part 1 of 2 Mixed Effect Model)
Multiple regression model for the effect of gender on vocal pitch
Power Analysis
Performs a Power/Sample Size analysis for a variety of conditions
Partial Differential Model of the Diffusion-Reaction Equation
Uses the PDE solvers (deSolve & ReacTran) to solve the diffusion problem
R Art - Circles on Black
Artistic use of R