[R] correlation between a discrete variable and a continuous variable
kdebusk at gmail.com
Thu Oct 16 14:53:33 CEST 2008
What test would you use to determine if a correlation exists between a
discrete variable and a continuous variable?
For example, I have a rating for stream water quality (excellent,
good, fair, poor) and a corresponding nitrogen concentration. I want
to see if there is a correlation between the water quality rating and
the concentration of nitrogen in the stream.
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