US Gross Domestic Product (GDP) per capita/Measuring Worth

Most of the statistical computations summarized in the Wikiversity article on "US Gross Domestic Product (GDP) per capita" can be replicated by "knitting" the R Markdown code in this vignette in.

Process

 * 1) Open an instance of .  If you don't already have it installed, you can go to "RStudio Cloud" and click "get started for free" (at least as of 2020-10-24).  Or you can download and install free and open-source versions of it and R on your local computer.  R is available from The Comprehensive R Archive Network.  For RStudio, go to its website > Products (top center) > RStudio > "RStudio Desktop" > "Open Source Edition" > "Download RStudio Desktop".
 * 2) Start RStudio.  Then File > "New File" > "R Markdown..." > Title:  "Measuring Worth" > HTML > OK.
 * 3) Replace the default code in this new RMarkdown vignette on "Measuring Worth" with the text from the section below entitled, 'RMarkdown vignette on "Measuring Worth"'.
 * 4) Save.
 * 5) File > "New File" > "Text File".
 * 6) Copy the text from the section below entitled "nuc-references.bib" into this new empty text file.
 * 7) Save as "nuc-references.bib".
 * 8) Click the "Knit" icon;  see the companion image.  Or read the text and run the code chunks one at a time manually.  The latter makes it relatively easy to look at intermediate computations carefully and experiment with changing things in different ways.