[R] Problem: No p-value for a point-baserial correlation with R

Dominik Maiori d.maiori at windowslive.com
Sat Apr 16 11:39:47 CEST 2016

Dear community
I'm pretty new to R and I'm trying to do a Point-baserial correlation for a nominal dichotomous variable with a interval scaled variable. It works fine, but the output just shows me the correlation and nothing else (p-Value would be important). 
I tried it with the following codes:
- biseral.cor()
- cor.biseral()
- I also tried a polyserial() I've found on this question page: http://stackoverflow.com/questions/35880910/point-biserial-and-p-value
Problem: It's not working (telling me y has fewer than 2 levels) and it would also be for a ordinal dichotomous variable, but I only have a nominal dichotomous variable. 
In the forum if found following Syntax that I've tried out: https://stat.ethz.ch/pipermail/r-help/2003-April/031852.html
It seams to work because I don't get any error messages but I'm not getting an output either.
I'm really thankful for every help I could get on this topic or tips where I can find out and learn how to find a correlation with a p-value in R for a nominal dichotomous and an interval scaled variable.
Thanks in advance and have a nice weekend!
	[[alternative HTML version deleted]]

More information about the R-help mailing list