For a 4 factor 2 level Half fractional factorial design, which of the following statements are true?
i. Third order interactions are aliased
ii. Second order interactions are aliased
iii. The fourth order term could be the Design Generator
iv. All main effects are significant
OPTIONS
- i and ii
- i, ii and iii
- i and iii
- i, ii, iii and iv
ANSWER
i and iii
EXPLANATION
The settings for the experimental design hold good only with third order interactions being aliased and fourth order term being the design generator, so i and iii are correct.
