I am writing-up a free/opensource app using Shiny (from the folks at
Rstudio) for students in my marketing research class. Shiny is a great
free/opensource tool-kit (no association just a fan). All you need is R and
a modern browser (e.g., Chrome, Safari, or Firefox).

To see the analysis app in action: http://vnijs.rady.ucsd.edu:3838/marketing

Just don't click the up- or download button's as they are not yet
functional in shiny-server :) You can use the 'Load package data:'
drop-down which has links to the AER and Ecdat data. You can also
copy-and-paste data from, say, excel in the Transform tab.

To upload/download data you can install the app to run locally on your
computer. Install instructions and code are linked below (go to the bottom
of the page):

https://github.com/mostly-harmless/radyant

I am actively developing the app but it should be quite functional already.

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