Abstract
In this paper, we present some partially balanced fractional 2m1+m2 factorial designs of resolution IV derived from partially balanced arrays of full strength such that (A) all the main effects and all the two-factor interactions within the m1 factors and the m2 ones each are estimable, (B) all the main effects and all the two-factor interactions within the m1 ones and between the m1 and m2 ones are estimable, (C) all the main effects and all the two-factor interactions within the m1 ones are estimable, (D) all the main effects and all the two-factor interactions between the m1 and m2 ones are estimable, and (E) all the main effects are estimable.
