R shiny app
https://www.rstudio.com/products/shiny/shiny-user-showcase/
http://www.showmeshiny.com/
http://www.albany.edu/psychology/statistics/#applets
http://www2.stat.duke.edu/~mc301/shinyed/
http://www.statistics.calpoly.edu/shiny#probview
Simple regression
https://gallery.shinyapps.io/simple_regression/
Distribution
https://gallery.shinyapps.io/dist_calc/
Co-linearality
Multicollinearity in multiple regression https://gallery.shinyapps.io/collinearity/
Modeling choices in multiple regression
https://gallery.shinyapps.io/multi_regression/
Power
http://www.statstudio.net/free-tools/power-analysis/
Teaching Demos
https://rdrr.io/rforge/TeachingDemos/man/ci.examp.html
https://rdrr.io/rforge/TeachingDemos/man/power.examp.html
https://www.rdocumentation.org/packages/TeachingDemos/versions/2.10/topics/TeachingDemos-package
Type II error
How do I find the probability of a type II error?.
How to best display graphically type II (beta) error, power and sample size?
http://www.intuitor.com/statistics/T1T2Errors.html
Prey
https://statisticalplumber.shinyapps.io/lotka/lotka.Rmd
OLS
https://econometricsbysimulation.shinyapps.io/OLS-App/