At 10:37 AM 2/8/02 -0800, Thomas Souers wrote: >2) Secondly, are contrasts used primarily as planned comparisons? If so, why?
well, in the typical rather complex study ... all pairs of possible mean differences (as one example) are NOT equally important to the testing of your theory or notions so, why not set up ahead of time ... THOSE that are (not necessarily restricted to pairs) you then follow ... let the other ones alone no law says that if you had a 3 by 4 by 3 design, that the 3 * 4 * 3 = 36 means all need pairs testing ... in fact, come combinations may not even make a whole lot of sense EVEN if it is easier to work them into your design >I would very much appreciate it if someone could take the time to explain >this to me. Many thanks. > > >Go Get It! >Send FREE Valentine eCards with Lycos Greetings >http://greetings.lycos.com > > >================================================================= >Instructions for joining and leaving this list, remarks about the >problem of INAPPROPRIATE MESSAGES, and archives are available at > http://jse.stat.ncsu.edu/ >================================================================= Dennis Roberts, 208 Cedar Bldg., University Park PA 16802 <Emailto: [EMAIL PROTECTED]> WWW: http://roberts.ed.psu.edu/users/droberts/drober~1.htm AC 8148632401 ================================================================= Instructions for joining and leaving this list, remarks about the problem of INAPPROPRIATE MESSAGES, and archives are available at http://jse.stat.ncsu.edu/ =================================================================
