One single common factor i1 i2 i3 i4 i1 1.00 0.64 0.64 0.64 i2 0.64 1.00 0.64 0.64 i3 0.64 0.64 1.00 0.64 i4 0.64 0.64 0.64 1.00 Two uncorrelated common factors i1 i2 i3 i4 i1 1.00 0.64 0.00 0.00 i2 0.64 1.00 0.00 0.00 i3 0.00 0.00 1.00 0.64 i4 0.00 0.00 0.64 1.00 Two correlated common factors i1 i2 i3 i4 i1 1.00 0.64 0.41 0.41 i2 0.64 1.00 0.41 0.41 i3 0.41 0.41 1.00 0.64 i4 0.41 0.41 0.64 1.00 In Confirmatory Factor Analysis, relationships among factors may be specified, giving rise to the ...

Introduction You would like to do a systematic search of the scientific literature on a given topic. But a wild caveat appears - your familiarity (or lack there of) with the topic will bias your search, while your field lacks in standardized terminolog...

Introduction You would like to do a systematic search of the scientific literature on a given topic. But a wild caveat appears - your familiarity (or lack there of) with the topic will bias your search, while your field lacks in standardized terminolog...

Reason R is used together with Docker for Reproducible Research and isolated development environments. Apart from the transparency, portability, extensibility and reusability that Docker provides in these context, having RStudio Server accessible in th...

I. Intro A smoother is a method for summarizing the trend of a dependent variable as a function of one or more independent variables. It produces an estimate of the trend that is less variable than the dependent variable itself; hence named smoother. I...

Install R (r-base) 1. Install helper software software-properties-common and dirmngr software-properties-common for managing the repositories that you install software from. dirmngr for managing and downloading certificate revocation lists and for ...

Backstory In August of 2019 we had just finished running a very small RCT on a simple social-interaction intervention for social stress relief. As in most RCTs, we had a control group and a treatment group. The treatment group had significantly higher ...

Motivation Google Colab is a great free could computing resource. The best part is that it uses Jupyter-like Notebooks that support R runtime out of the box (no need to install kernel or anything), and these notebooks live in your Google Drive . Me and...