Tag: AQA

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...

OPTIONS Replication Randomization Blocking None of the above ANSWER Randomization EXPLANATION Randomization always happens by default with special computer packages so Randomization is correct.

OPTIONS 8 16 12 None of the above ANSWER None of the above EXPLANATION For a 3 factor 2 level experiment, 1/4th fractional factorial design can be made.

OPTIONS 20 5 25 15 ANSWER 25 EXPLANATION Mean Squares of treatments is sum squares of treatments/number of treatments -1, thus 25 is correct.

OPTIONS 0.5 1 1.5 2 ANSWER 1.5 EXPLANATION Using the convention formula for arriving at main effects, 1.5 is correct.

A Black Belt conducts a designed experimental setup on his factors. While conducting the experiment, he finds that some main effects are aliased with 2nd order and 3rd order interaction. Which type of experiment did he conduct? OPTIONS Screening experiment Fractional Factorial Design Full Factorial...

OPTIONS Balanced Orthogonal Nested Crossed ANSWER Orthogonal EXPLANATION Balancing of effects results in orthogonality so Orthogonal is correct.

OPTIONS The setup should focus on controllable factors The setup should ignore uncontrollable factors The setup should focus on uncontrollable factors Equal weightage needs to be given for controllable as well as uncontrollable factors ANSWER The setup should focus on uncontrollable factors EXPLANATION A designed...

OPTIONS -1 1 60. 0 ANSWER 0 EXPLANATION The coded value assuming a two level design is -1 and 1 and center point is 0, so 0 is correct.

OPTIONS Add replicates Add blocks Randomize the runs Add center points or axial points ANSWER Add center points or axial points EXPLANATION Adding center points is the best way to estimate curvature in a design.