Question 1 : Which of the following statements is correct about interactions?

- They are enhancements of the effect.
- They are additive effects.
- They are spurious effects.
- They occur only in interaction with organismic dependent variables.

Question 2 : The objective of Response surface methodology is to _____________

- Maximize the response
- Minimize the response
- Optimize the response
- Neglect the response

Question 3 : In field experiments certain factors may require _____ plots than for others.

- Lesser
- Same
- Larger
- Small

Question 4 : A factor with a range of settings, that is controlled by the user during use is called as -

- random factor
- robust factor
- nominal factor
- signal factor

Question 5 : The test for significance of regression is attest to determine whether a linear relationship exists between the response variable y and a subset of the regressor variables x1, x2, â€¦..xk. The appropriate hypothesis are ______.

- H0 : b1 = b2 = â€¦.. = bk = 0 H1 : bj Â¹ 0 â€¦â€¦â€¦ for at least one j.
- H0 : b1 = b2 = â€¦.. = bk = 1 H1 : bj = 0 â€¦â€¦â€¦ for at least one j.
- H0 : b1 = b2 = â€¦.. = bk = -1 H1 : bj = 0 â€¦â€¦â€¦ for at least one j.
- H0 : b1 = b2 = â€¦.. = bk = 1 H1 : bj Â¹ 1 â€¦â€¦â€¦ for at least one j.

Question 6 : Which of the following is a statistical consideration in conducting experiments?

- statistically valid sample size should be used
- parts should be tagged during tests
- variable data should be used
- attribute data should be used

Question 7 : The main difference between traditional Design of Experiments and Taguchi's Design of Experiments is -

- Taguchi's DoE considers average to be more interesting to study than the variation
- Taguchi's DoE considers statistics to study variation
- Taguchi's DoE considers attribute data to study variation
- Taguchi's DoE considers variation to be more interesting to study than the average

Question 8 : What must we include when reporting an ANOVA?

- Standard deviation, degrees of freedom, Margin
- Degrees of freedom, Standard deviation, Means
- Means, Standard deviation, Margin
- Margin, degrees of freedom, Means

Question 9 : Each main plot is divided into subplots depending on the number of _______.

- Sub plot treatments
- Pre plot treatments
- Post plot treatments
- Modified plot treatments

Question 10 : Consider the equation used for estimation of parameters in Linear regression models . In this equation the size of the matrix X is___.

- n x p
- P x n
- k x p
- p x k

Question 11 : In the two one-half fractions 2k design the two factor interactions are given by ______.

- [BC] = 0.5 (a + b - c + abc) [AC] = 0.5 (-a + b â€“ c + abc) [AB] = 0.5 (-a + b + c + abc)
- [BC] = 0.5 (a â€“ b - c + abc) [AC] = 0.5 (-a + b â€“ c + abc) [AB] = 0.5 (-a â€“ b + c + abc)
- [BC] = 0.5 (a â€“ b - c - abc) [AC] = 0.5 (-a + b â€“ c - abc) [AB] = 0.5 (-a â€“ b + c - abc)
- [BC] = 0.5 (-a + b - c - abc) [AC] = 0.5 (-a + b â€“ c - abc) [AB] = 0.5 (-a + b + c - abc)

Question 12 : Designs in which more than one variable are studied simultaneously are called __________ designs.

- factorial
- sum of squares
- two tailed
- replicate

Question 13 : What will be the correct sequence of DOE to understand the process settings ?

- Interpret result-Perform Experiments-Prediction model-optimize the function
- Perform experiments-Interpret Result-Prediction model-optimize the function
- Perform experiments-Interpret result- optimize the function- Prediction model
- Perform experiments-Prediction Model-Interpret result- optimize the function

Question 14 : A procedure for moving sequentially in the direction of maximum decrease in the response is called __________ and used for ___________ .

- Method of steepest ascent, maximization
- Method of steepest ascent, minimization
- Method of steepest descent, minimization
- Method of steepest descent, maximization

Question 15 : Consider the equation used for estimation of parameters in Linear regression models . In this method equation for evaluation of is ____.

Question 16 : Factorial designs _______.

- include no more than one research hypothesis.
- cannot test participants across more than one condition.
- contain more than one null hypothesis.
- are ineffective when matched participants are included.

Question 17 : For a 2k-1 design with defining relation I=ABC, the experimenter wants to consider main effects and two-factor interaction effects; the alias matrix will be

Question 18 : Which of the following is an example of Taguchi's three level design?

- L4
- L8
- L12
- L27

Question 19 : Which of the following typically generate negative information about which factors do not make a difference in the quality characteristic of interest?

- sample data sets
- attribute data sets
- bad data sets
- good data sets

Question 20 : Consider the mathematical model y = f (x, z); Now determining the x variability so that the effects of the uncontrollable variables are minimized is called ____.

- Process optimization
- Robust design
- Process control
- Process characterization

Question 21 : A continuous form of data is called as-

- attribute data
- variable data
- discontinuous data
- sample data

Question 22 : Which of the following S/N ratio you will choose for defects?

- smaller the better
- larger the better
- nominal the best
- optimum the better

Question 23 : The method of steepest ascent is a procedure for moving sequentially in the.

- direction of the average increase in the response
- direction of the minimum increase in the response
- direction of the maximum increase in the response
- Direction perpendicular to the maximum increase in the response

Question 24 : The design in which no main effect is aliased with any other main effect, or with any two-factor interaction, but two-factor interactions are aliased with each other are called _____.

- Resolution VI design
- Resolution V design
- Resolution IV design
- Resolution III design

Question 25 : What is the appropriate statistical test for a factorial design?

- the Modes test
- ANOVA
- t-test
- chi-square

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