Hi On 1 Jun 2004, s wrote: > If for example in 2_ factorial design sum of block & > treatment effects separately be 0 then we say there isn't any > interaction effect.( we don't test this hypothesys : aibj=0 > that "aibj" is the interaction effect of ai treatment & bj > block ).
The posting is unclear, but the first statement appears to be incorrect. The interaction effect is different than the main effects of treatment and block (assuming here you were referring to one of the factors in your factorial design rather than the variability due to blocks in a within-subject design). The significance or nonsignificance of the main effects tells us nothing about the interaction. Best wishes Jim ============================================================================ James M. Clark (204) 786-9757 Department of Psychology (204) 774-4134 Fax University of Winnipeg 4L05D Winnipeg, Manitoba R3B 2E9 [EMAIL PROTECTED] CANADA http://www.uwinnipeg.ca/~clark ============================================================================ . . ================================================================ This list will soon be replaced by the new list EDSTAT-L at Penn State. Please subscribe to the new list using the web interface at http://lists.psu.edu/archives/edstat-l.html. ================================================================
