Thank you for your help! I was able to get it to knit to word, but for some reason it does not want to knit to PDF. This is the message that I am getting:
output file: Titanic.knit.md
Error: Failed to compile Titanic.tex.
In addition: Warning message:
In system2(..., stdout = FALSE, stderr = FALSE) : error in running command
No TeX installation detected (TeX is required to create PDF output). You should install a recommended TeX distribution for your platform:
Windows: MiKTeX (Complete) - http://miktex.org/2.9/setup
(NOTE: Be sure to download the Complete rather than Basic installation)
Mac OS X: TexLive 2013 (Full) - http://tug.org/mactex/
(NOTE: Download with Safari rather than Chrome strongly recommended)
Linux: Use system package manager
I tried following these instructions, but still only the Word document works for me when I knit.