[R] Using "subset" in correlation analysis

[David Barron]

You have to use the formula interface, so something like this:

cor.test(~ Alt + Cab, data=adults, alternative="greater", subset=Sex=="male")

David

On Wed, Mar 19, 2008 at 12:59 PM, James J. Roper <jjroper at gmail.com> wrote:
> The correlation test function says that it can do a subset where one
>  specifies the subsete vector.  I cannot seem to get it to work.
>
>  For example, the command line is:
>
>  cor.test(adults$Alt, adults$Cab, alternative="greater", method="pearson")
>
>  So, let´s say my subset vector is "Sex".  How would I state the command
>  to get the test of that subset?
>
>  Thanks in advance.
>
>  Jim
>  --
>
>
>       James J. Roper, Ph.D.
>
>  James J. Roper
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David Barron
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