those familiar with conjoint, though i don't have any statistical package to run on it, so my plan was to do it on an excel sheet.

Experiment set up: 6 attributes, with 3 levels each.

18 devised combinations to be ranked by respondents.

after a single respondent ranks them, i can run a multiple regression, with the independent variables as the attribut's levels (i.e 18-6=12) and the dependent as the ranks given by the respondent for each of the 18 combinations of this model. Thus the coefficients will represent the part-worths with respect to the deleted level.

my question is what next can i do, if i have 75 respondents ranked the 18 combinantions, to what extent can i work on this without a stat package!