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**R Programming**

Basic Programming

Powertools

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**Econometrics**

Basic Statistics

Economics

Baysian Estimation

Write Your Own Estimators

Probability

Random Walk

Spatial Simulations

Meta-Analysis

Hierarchical Linear Modelling

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**Psychometrics**

Simulating Individual Items

Generating Tests

Item Response Theory Parameter Estimation

Computer Adaptive Tests

Psychometrics' Metrics

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**Web Apps **

Concerto - Test Construction

Concerto - Item Construction

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**Miscellaneous**

A Sudoku Puzzle Solver - attempt 1

Sudoku Automation Solver Challenge - R

Bulk search for domain names using R

Unfiled

Using Simulations to Maximize Stochastic Models

Lorenz Attractor Simulation

Explosive Roommate Combinations

Optimal Presidential Seeking Behavior

US Daily Gun Deaths R Animation - Sandy Hook

Loading up your custom toolkits at startup - R

US Daily Gun Deaths R Animation - Sandy Hook

Loading up your custom toolkits at startup - R

Social Networks

Simulating Social Network Data

Simulating Social Network Hotspots

R & Stata Bridge

7 commands in R & Stata

Nested functions in R and Stata

Stata is to Accounting as R is to Tetris

R vs Stata Non-linear least squares!

ANOVAs and MANOVAs

Rstylizer - Shiny, Stata HTML Syntax Highlighter

Question and Answer: Generating Binary and Discrete Response Data

A Stata HTML syntax highlighter in R

Dynamic Models

SIR Model - The Flu Season - Dynamic Programming

A Dynamic Simulation of a Zombie Apocalypse

Tit for Tat - Axelrod tournament style competitive simulation

Graphics/Animations

Creating an easy pie chart from data vectors

Strategic Zombie Simulation

Spatial Critter Swarming Simulation

Generate GIP integrated animation: Gun deaths animation

Doodling in R!

Are Fox News Polls Biased?

My Prime Sieve - Homage to Yitan Zhang

R-Tools

Export R Results Tables to Excel - Please don't kick me out of your club

dapply - tapply for dataframes

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