Total Quality Management Online MCQ Set 14

QN01. A 2 X 2 factorial design

  1. is called a one-way ANOVA.
  2. results in a four-cell matrix.
  3. cannot yield interactions.
  4. must include an organismic independent variable.
Answer

(B)results in a four-cell matrix.

QN02. The critical path method determines the ______________ path from the beginning to the end of the project.

  1. Shortest
  2. Quickest
  3. Longest
  4. Middle
Answer

(C)Longest

QN03. Two events, A and B, are said to be independent if:

  1. P(A ∩ B) = P(A).P(B)
  2. P(A ∩ B) = P(A) + P(B)
  3. P(A | B) = P(B)
  4. P(B | A) = P(A)
Answer

(A)P(A ∩ B) = P(A).P(B)

QN04. Which of the following distributions is suitable to model the length of time that elapses before the first employee passes through the security door of a company?

  1. Exponential
  2. Normal
  3. Poisson
  4. Binomial
Answer

(A)Exponential

QN05. A null hypothesis is rejected if the value of a test statistic lies in the:

  1. Rejection region
  2. Acceptance region
  3. Both (a) and (b)
  4. Neither (a) nor (b)
Answer

(A)Rejection region

QN06. Smaller p-values indicate more evidence in support of:

  1. the null hypothesis
  2. the alternative hypothesis
  3. the quality of the researcher
  4. further testing
Answer

(B)the alternative hypothesis

QN07. Analysis of variance is a statistical method of comparing the ______________ of several populations.

  1. standard deviations
  2. variances
  3. means
  4. proportions
Answer

(C)means

QN08. If the Mean Square Error MSE of an ANOVA for six treatment groups is known, you can compute

  1. degrees of freedom, df1
  2. the standard deviation of each treatment group
  3. the pooled standard deviation
  4. all answers are correct
Answer

(C)the pooled standard deviation

QN09. In a study, subjects are randomly assigned to one of three groups: control, experimental A, or experimental B. After treatment, the mean scores for the three groups are compared. The appropriate statistical test for comparing these means is:

  1. the correlation coefficient
  2. chi square
  3. the t-test
  4. the analysis of variance
Answer

(D)the analysis of variance

QN10. If the F-Value calculated from the data is 5.0, the result is statistically significant

  1. Always
  2. Sometimes
  3. Never
  4. Illogical Question
Answer

(B)Sometimes

QN11. Two factors are said to interact when

  1. the simple main effects of one factor are not homogeneous across all levels of the other.
  2. the simple main effects of one factor are homogeneous across the levels of the other.
  3. there are neither main effects nor simple main effects.
  4. there are no main effects.
Answer

(A)the simple main effects of one factor are not homogeneous across all levels of the other.

QN12. Which of these characterizes a factorial design?

  1. One in which there is a single independent variable.
  2. One in which there is more than one independent variable
  3. One in which the researcher wants to investigate the interactions between variables
  4. Both B and C
Answer

(D)Both B and C

QN13. What statistic is used to check the significance of the Kruskal-Wallis test?

  1. Mean rank
  2. Partial
  3. t-value
  4. Chi squared
Answer

(D)Chi squared

QN14. What is the appropriate statistical test for a factorial design?

  1. the Modes test
  2. ANOVA
  3. t-test
  4. chi-square
Answer

(B)ANOVA

QN15. Give the F test for the interaction effect of factors A and B.

  1. F = (SSABB )/MSE
  2. F = (SSA)/MSE + (SSB)/MSE
  3. F = (MSA)/MSE + (MSB)/MSE
  4. F = (MSAB)/MSE
Answer

(D) F = (MSAB)/MSE

QN16. The Kruskal-Wallis is based upon the ______________ test.

  1. Pearson's r
  2. Wilcoxon
  3. Mann Whitney
  4. Friedman
Answer

(C)Mann Whitney

QN17. In a factorial experiments, we

  1. test one factor at a time
  2. cannot estimate interactions
  3. test all possible combination of factor levels are tested
  4. all of these
Answer

(C)test all possible combination of factor levels are tested

QN18. What is the Variation due to Memory?

  1. 84%
  2. 76%
  3. 19%
  4. 5%
Answer

(B)76%

QN19. In a factorial design, a(an) ______________ between independent variables indicates that the effect of one independent variable is different at different levels of the other independent variable.

  1. main effect
  2. factorial effect
  3. interaction
  4. moderation
Answer

(C)interaction

QN20. The chi-square goodness-of-fit test can be used to test for:

  1. significance of sample statistics
  2. difference between population means
  3. normality
  4. probability
Answer

(C)normality

QN21. What is the Sum of Squares of the interaction (AB)?

  1. 6.075
  2. 39.48
  3. 7.19
  4. 3.89
Answer

(D)3.89

QN22. How many replicates of the experiment were performed?

  1. 1 Replicate
  2. 2 Replicates
  3. 3 Replicates
  4. 4 Replicates
Answer

(C)3 Replicates

QN23. You conduct a hypothesis test and you observe values for the sample mean and sample standard deviation when n = 25 that do not lead to the rejection of Ho (null hypothesis). You calculate a p-value of 0.0667. What will happen to the p-value if you observe the same sample mean and standard deviation for a sample n>25?

  1. Increase
  2. Decrease
  3. Stay the same
  4. May either increase or decrease
Answer

(B)Decrease

QN24. What does a beta of 0.478 mean?

  1. That the relationship between the independent and dependent variables is not linear
  2. That the regression is not significant
  3. That the correlation is significant
  4. This means that for every unit increase in your independent variable, your dependent variable increases by 0.478 units
Answer

(D)This means that for every unit increase in your independent variable, your dependent variable increases by 0.478 units

QN25. Which of the following points are not true when conducting a multiple regression?

  1. Multiple regression can be used to assess quadratic relationships
  2. Data must be homogeneous for a multiple regression
  3. Data must be normally distributed for multiple regression
  4. Multiple regression can be used to assess linear relationships
Answer

(A)Multiple regression can be used to assess quadratic relationships

QN26. Which of the following definitions is correct?

  1. An activity, which results in an outcome, is called an event.
  2. The probability of an event is expressed in decimal form ranging from -1 to +1.
  3. The sample space refers to all possible outcomes of an experiment.
  4. The probability that an event will occur is called the experiment.
Answer

(C)The sample space refers to all possible outcomes of an experiment.

QN27. The discrete random variable X has the probability function (k is a constant): Answer question 8 - 10 based on the information given above. The value of k is:

  1. 1 point
  2. 1/18
  3. 1/12
  4. 1/6
Answer

(B)1/18

QN28. The value of E[X] is:

  1. 52/18
  2. 28/9
  3. 52/9
  4. 28/18
Answer

(C)52/9

QN29. A larger standard deviation for a normal distribution with an unchanged mean indicates that'the distribution becomes:

  1. narrower and more peaked
  2. flatter and wider
  3. more skewed to the right or left
  4. a change in the standard deviation does not change the shape of the distribution
Answer

(B)flatter and wider

QN30. When the k population means are truly different from each other, it is likely that the average error deviation:

  1. is relatively large compared to the average treatment deviations.
  2. is relatively small compared to the average treatment deviations.
  3. is about equal to the average treatment deviation.
  4. differ significantly between at least two of the populations.
Answer

(B)is relatively small compared to the average treatment deviations.

QN31. If the F-Value calculated from the data is 0.9, the result is statistically significant

  1. Always
  2. Sometimes
  3. Never
  4. Illogical Question
Answer

(C)Never

QN32. ______________ designs are research designs with more than one independent variable.

  1. Simple
  2. Monotonic
  3. Factorial
  4. Multi
Answer

(C)Factorial

QN33. What statistical procedure is used to assess the statistical significance of the main effects and the interaction(s) in a factorial design?

  1. t-test
  2. correlation
  3. analysis of covariance
  4. analysis of variance
Answer

(D)analysis of variance

QN34. In a factorial design, a(an) ______________ between independent variables indicates that the effect of one independent variable is different at different levels of the other independent variable.

  1. main effect
  2. factorial effects
  3. interaction
  4. collaboration
Answer

(C)interaction

QN35. Scatter diagrams show the relationship between:

  1. Two variables
  2. The dependent variable along the y axis
  3. The dependent variable along the x axis
  4. None of these
Answer

(A)Two variables

QN36. How would an interaction be indicated in a line graph? 2/5

  1. as parallel lines
  2. as intersecting lines
  3. as overlapping lines
  4. as diagonal lines
Answer

(B)as intersecting lines

QN37. What is the Effect of Memory (MIPS)?

  1. 40
  2. 20
  3. 10
  4. 5
Answer

(B)20

QN38. What is the Effect of Cache (MIPS)?

  1. 40
  2. 20
  3. 10
  4. 5
Answer

(C)10

QN39. What is the Variation due to Interaction?

  1. 84%
  2. 76%
  3. 19%
  4. 5%
Answer

(D)5%

QN40. Dr. AB is designing a 3 x 7 factorial experiment. Which of the following is true about AB's study?

  1. Dr. AB has 21 subjects.
  2. Dr. AB's study has 2 independent variables: one with 3 levels and one with 7 levels
  3. Dr. AB's study has 21 independent variables.
  4. Dr. AB's study has 3 independent variables: one with 3 levels, one with 7 levels, and one with 21 levels.
Answer

(B)Dr. AB's study has 2 independent variables: one with 3 levels and one with 7 levels

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