Where does Anaconda Python install on Windows?
To find where Anaconda was installed I used the "where" command on the command line in Windows.
C:\>where anacondawhich for me returned:
C:\Users\User-Name\AppData\Local\Continuum\Anaconda2\Scripts\anaconda.exe
Which allowed me to find the Anaconda Python interpreter at
C:\Users\User-Name\AppData\Local\Continuum\Anaconda2\python.exe
to update PyDev
You can search for "Anaconda prompt" in installed programs and run it.
When it opens, it shows the directory anaconda is working from. 
As you can see c:\programdata\anaconda2 is my installed directory.
*side note: programdata folder is hidden in windows so you'll have to enter its path in the folder explorer to access it.