MERM Learning Tools Project
I have organized a Learning Tool Group. Our members are interested in visualizing statistics and developing tools for doing research and learning statistics and psychometrics. We have developed a website, which contains several Shiny R web applications. These applications provide an easy  interface for conducting item analysis, EFA, and CFA with both continuous and categorical variables. Feel free to contact me if you are interested in joining our group.

Learning R

To update R on Windows:

  1. Install and load installr: install.packages("installr") and library(installr)
  2. Call updateR() function. This will start the updating process of your R installation by: “finding the latest R version, downloading it, running the installer, deleting the installation file, copy and updating old packages to the new R installation.”
  3. From within RStudio, go to Help > Check for Updates to install newer version of RStudio (if available, optional).

Inspiring or interesting TED Talks

Latent class analysis

Machine Learning

Machine learning (ML) can be considered as statistical learning as many methods of ML are based on certain statistical methods. The format or the name may be modified or changed, but ML in nature is some sort of statistical methods. ML should not be viewed as “black box”. We should always carefully describe our model, assumptions and limitations. As beginners, you can always start from “An Introduction to Statistical Learning with Applications in R” (2013) by Gareth James, Daniela Witten, Trevor Hastie, and Robert Tibshirani.