what is the difference between a total of 64 and a full factorial design? what type of study is a fractional factorial analysis? how to do a fractional factorial design how to use fractional factorial design how to design fractional factorial regression how many combinations of variables is a fractional factorial design a full factor design? how to do a fractional factorial design with six independent variables how to find the optimum r r regression parameters for a single set of environmental variables how to use fractional factorial design which factor is used in the fractional design of a data set how to do a comparative analysis of six independent variable what is the difference between a full and fractional factorial design what is the fractional factorial design used for? how do i find the proportions of each factor in a fractional factorial design how to do a r regression analysis for a set of six factors how many combinations in full factorial how to do a conjoint analysis for a fractional design which statement is the difference between a full factorial design and a fractional design? how to obtain an orthogonal regression