Using the search engine on "correlation" fails to find the cor.test function. I would imagine it to be very useful for the search to find the cor.test function--I know it would have saved me a fair amount of time. One way for the search engine to find cor.test would be to add the word "correlation" to the title page for cor.test, for example: Test for Association/Correlation Between Paired Samples Kevin Wright (Apologies for the corporate sig.) This communication is for use by the intended recipient and contains information that may be privileged, confidential or copyrighted under applicable law. If you are not the intended recipient, you are hereby formally notified that any use, copying or distribution of this e-mail, in whole or in part, is strictly prohibited. Please notify the sender by return e-mail and delete this e-mail from your system. Unless explicitly and conspicuously designated as "E-Contract Intended", this e-mail does not constitute a contract offer, a contract amendment, or an acceptance of a contract offer. This e-mail does not constitute a consent to the use of sender's contact information for direct marketing purposes or for transfers of data to third parties. Francais Deutsch Italiano Espanol Portugues Japanese Chinese Korean http://www.DuPont.com/corp/email_disclaimer.html