# kh

QUESTION 1

In designing a 2-level design that will accommodate factors A, B, C, D, E, F, and interactions AxB, AxD, DxE, DxF
What is the minimum number of columns needed?a.8b.9c.10d.11

QUESTION 2

For a 2-level design that will accommodate factors A, B, C, D, E, F, and interactions AxB, AxD, DxE, DxF
Which Taguchi design would be most appropriate? a.L4b.L8c.L16d.L27

QUESTION 3

The total number of tests required to run a Full Factorial design utilizing 13 factors at 3 levels is…a.9b.27c.2197d.1,594,323

QUESTION 4

The reason you can find optimal factor levels from only a fraction of the total combinations is because:a.The columns are orthogonal.b.The factors are binomial.c.The columns are randomized to eliminate bias.

QUESTION 5

Once a list of factors to be used in an experiment are created, they must be classified as either:a.Highly likely or highly unlikelyb.Controllable or Noisec.Important or Unimportantd.Controllable or Uncontrollable

QUESTION 6

The linear graph for analyzing the AxB, AxC, and BxC interactions would be shaped like a…a.straight lineb.rectanglec.pentastard.triangle

QUESTION 7

What 2-level Taguchi design needs to be used for the following:
Factors A, B, C, D, E and Interactions AxB, AxC, AxD, AxE, BxC, BxD, BxE, CxD, CxE, DxEa.L4b.L8c.L9d.L16

QUESTION 8

If we wanted to use a 3-level design for the previous set of factors and interactions (A, B, C, D, E, AxB, AxC, AxD, AxE, BxC, BxD, BxE, CxD, CxE, DxE), how many columns minimum would be required (based on the L^n formula)?

a.13b.18c.25d.27

QUESTION 9

When analyzing the effects of noise factors, we typically will set the optimal level for each noise factor studied after the experiment is over. True
False

QUESTION 10

The statistic developed by Taguchi used in Taguchi analysis is the…a.Decibelb.Signal to Noise ratioc.Mean Variance quotientd.RMS voltage

QUESTION 11

When determining optimal levels for factors using the Signal to Noise (S/N) ratio:a.We always choose the level with the highest average S/N ratio.b.We choose the level with the highest S/N ratio only for bigger the better experiments.c.We choose the level with the lowest S/N ratio if we are trying to minimize an output.

QUESTION 12

What are the typical objectives of an experiment?  (Select all that apply)a.Maxmizeb.Minimizec.Target to a Nominal Valued.Reduce variation

QUESTION 13

In designing a Taguchi experiment with both controllable and noise factors, we would carefully put the noise factors into the same array as the controllable factors in order to analyze them independently. True
False

QUESTION 14

In considering an experiment with both controllable and noise factors…a.The controllable factors and noise factors are put into a single array.b.The noise factors are put into an inner array and the controllable factors are put into an outer array.c.The controllable and noise factors can be put into either array, as long as they are analyzed appropriately.d.The controllable factors are put into an Inner array while the Noise factors are put into an Outer array.

QUESTION 15

The following array is a portion of an L8 array from an experiment measuring several factors and their interactions at 2 levels.
A     B     AB   D  …
No.   1     2      3     4   …
1       1     1      1     1   …
2       1     1      1     2   …
3       1     2      2     1   …
4       1     2      2     2   …
5       2     1      2     1   …
6       2     1      2     2   …
7       2     2      1     1   …
8       2     2      1     2   …
WHICH RUN NUMBERS WOULD BE USED IN THE CALCULATING THE MAIN EFFECT OF FACTOR “A” AT LEVEL 1?
a.Runs 1, 2, 3 and 4b.Runs 5, 6, 7 and 8c.Runs 1, 3, 5 and 7d.Runs 2, 4, 6 and 8

QUESTION 16

Using the same L8 array from the previous problem, an experiment measuring several factors and their interactions at 2 levels.
A     B     AB   D  …
No.   1     2      3     4   …
1       1     1      1     1   …
2       1     1      1     2   …
3       1     2      2     1   …
4       1     2      2     2   …
5       2     1      2     1   …
6       2     1      2     2   …
7       2     2      1     1   …
8       2     2      1     2   …
TO CALCULATE THE AXB INTERACTION EFFECT AT A1B2 WHICH RUN NUMBERS WOULD BE AVERAGED?No. 1, 2, 3 and 4No. 1 and 2No. 3 & 4No. 5 & 6

QUESTION 17

Copy of
Using the same L8 array from the previous problem, an experiment measuring several factors and their interactions at 2 levels.
A     B     AB   D  …
No.   1     2      3     4   …
1       1     1      1     1   …
2       1     1      1     2   …
3       1     2      2     1   …
4       1     2      2     2   …
5       2     1      2     1   …
6       2     1      2     2   …
7       2     2      1     1   …
8       2     2      1     2   …
TO CALCULATE THE AXB INTERACTION EFFECT AT A1B2 WHICH RUN NUMBERS WOULD BE AVERAGED?No. 1, 2, 3 and 4No. 1 and 2No. 3 & 4No. 5 & 6

QUESTION 18

Copy of
Copy of
Using the following L8 array (2 levels).
A     B     AB   D    E    BD
No.   1     2      3     4     5     6     7

1       1     1      1     1     1     1     1
2       1     1      1     2     2     2     2
3       1     2      2     1     1     2     2
4       1     2      2     2     2     1     1
5       2     1      2     1     2     1     2
6       2     1      2     2     1     2     1
7       2     2      1     1     2     2     1
8       2     2      1     2     1     1     2
TO CALCULATE THE BXD INTERACTION EFFECT AT LEVELS B2D2 WHICH RUN NUMBERS WOULD BE AVERAGED?No. 1 and 4No. 1 and 2No. 5 & 7No. 4 & 8

QUESTION 19

in a 2-level design each interaction requires __________ column(s). a.1b.2c.3d.4

QUESTION 20

In a 3-level design, each interaction requires ___________ columns.a.1b.2c.3d.4

QUESTION 21

In Nominal-the-Best experiments it is important to identify two types of factors,  1) Signal factors and 2) ______________

a.Factors that affect both the mean and the variation.b.Factors that affect neither the mean nor the variation.c.Factors that affect the variation only.

QUESTION 22

The ideal signal factor will affect the 1.___________________  but not the 2.__________________

QUESTION 23

After determining the optimal Factor levels for the controllable factors from you experiment, the next step is to…a.Celebrate with your team!b.Tell your boss you deserve a raise.c.Check to see if the you ran the optimal combination during your experiment and if not, RUN IT!d.Assume you’re good to go and write a report.

QUESTION 24

When you run the optimal factor/level combination you should expect the S/N ratio to be:a.Higher than any of the S/N ratios calculated during the experiment.b.Lower than any of the S/N ratios if the experiment was a smaller the better type.c.Somewhere between the highest and the lowest S/N ratio of the experiment.d.Impossible to predict

QUESTION 25

According to your Professor, the best strategy and approach to choosing factors, levels and interactions is to:
(CHOOSE ALL THAT ARE APPROPRIATE)a.Choose fewer factors at more levelsb.Choose more factors at fewer levelsc.Love interactions (put in as many as you can dream of!)d.Hate interactions, but allow for those you think might really be important. 