This website is presented solely for entertainment and educational purposes. The author and publisher of this website are not offering it as professional or research-services advice. While best efforts have been used in preparing this website, the author and publisher make no representations or warranties of any kind and assume no liabilities of any kind with respect to the accuracy or completeness of the contents and specifically disclaim any implied warranties of merchantability or fitness of use for a particular purpose. Neither the author nor the publisher shall be held liable or responsible to any person or entity with respect to any loss or incidental or consequential damages caused, or alleged to have been caused, directly or indirectly, by the information contained on this website. No warranty may be created or extended by sales representatives or written sales materials. Every reader of this website is different, and the advice and strategies contained in this website may not be suitable for your situation. You should seek the services of a competent professional before beginning any professional or research program.  The author and publisher of this website are not associated with the developers/publishers of the R statistical software package.