Exam 13: Experimental Design and Analysis of Variance
Exam 1: Data and Statistics72 Questions
Exam 2: Descriptive Statistics: Tabulargraphical76 Questions
Exam 3: Descriptive Statistics: Numerical154 Questions
Exam 4: Introduction to Probability93 Questions
Exam 5: Discrete Probability Distributions81 Questions
Exam 6: Continuous Probability Distributions114 Questions
Exam 7: Sampling and Sampling Distributions103 Questions
Exam 8: Interval Estimation78 Questions
Exam 9: Hypothesis Tests94 Questions
Exam 10: Inference About Means and Proportions With Two Populations61 Questions
Exam 11: Inferences About Population Variances60 Questions
Exam 12: Comparing Multiple Proportions, Test of Independence and Goodness of Fit45 Questions
Exam 13: Experimental Design and Analysis of Variance67 Questions
Exam 14: Simple Linear Regression119 Questions
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In a completely randomized experimental design involving five treatments, 13 observations were recorded for each of the five treatments (a total of 65 observations).Also, the design provided the following information.
SSTR = 200 (Sum of Squares Due to Treatments)
SST = 800 (Total Sum of Squares)
The mean square due to treatments (MSTR) is
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Correct Answer:
C
An ANOVA procedure is used for data obtained from four populations.Four samples, each comprised of 30 observations, were taken from the four populations.The numerator and denominator (respectively) degrees of freedom for the critical value of F are
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Correct Answer:
D
An ANOVA procedure is used for data that was obtained from four sample groups each comprised of five observations.The degrees of freedom for the critical value of F are
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Correct Answer:
B
The critical F value with 6 numerator and 60 denominator degrees of freedom at α = .05 is
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An ANOVA procedure is used for data obtained from five populations.Five samples, each comprised of 20 observations, were taken from the five populations.The numerator and denominator (respectively) degrees of freedom for the critical value of F are
(Multiple Choice)
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Which of the following is not a required assumption for the analysis of variance?
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In an analysis of variance problem if SST = 120 and SSTR = 80, then SSE is
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Consider the following ANOVA table. Source of Variation Sum of Squares Degrees of Freed om Mean Square F Between Treatments 2073.6 4 Between Blocks 6000 5 1200 Error 20 288 Total 29
The sum of squares due to error equals
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In factorial designs, the response produced when the treatments of one factor interact with the treatments of another in influencing the response variable is known as
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In a completely randomized experimental design involving five treatments, 13 observations were recorded for each of the five treatments (a total of 65 observations).Also, the design provided the following information.
SSTR = 200 (Sum of Squares Due to Treatments)
SST = 800 (Total Sum of Squares)
The number of degrees of freedom corresponding to within-treatments is
(Multiple Choice)
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To test whether or not there is a difference between treatments A, B, and C, a sample of 12 observations has been randomly assigned to the 3 treatments.You are given the results below. Treatment Observations A 20 30 25 33 B 22 26 20 28 40 30 28 22
The null hypothesis is to be tested at the 1% level of significance.The null hypothesis
(Multiple Choice)
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In a completely randomized experimental design involving five treatments, 13 observations were recorded for each of the five treatments (a total of 65 observations).The following information is provided.
SSTR = 200 (Sum of Squares Due to Treatments)
SST = 800 (Total Sum of Squares)
If we want to determine whether or not the means of the five populations are equal, the p-value is
(Multiple Choice)
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In an analysis of variance, one estimate of σ2 is based upon the differences between the treatment means and the
(Multiple Choice)
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A completely randomized design is useful when the experimental units are
(Multiple Choice)
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To test whether or not there is a difference between treatments A, B, and C, a sample of 12 observations has been randomly assigned to the 3 treatments.You are given the results below. Treatment Observations A 20 30 25 33 B 22 26 20 28 40 30 28 22
The mean square due to error (MSE) equals
(Multiple Choice)
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Consider the following information. =6750 H0:\mu1=\mu2=\mu3=\mu4 =8000 : At least one mean is different
The test statistic to test the null hypothesis equals
(Multiple Choice)
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In a completely randomized experimental design involving five treatments, 13 observations were recorded for each of the five treatments (a total of 65 observations).The following information is provided.
SSTR = 200 (Sum of Squares Due to Treatments)
SST = 800 (Total Sum of Squares)
The test statistic is
(Multiple Choice)
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Part of an ANOVA table is shown below. Source of Sum of Degrees of Mean Variation Squares Freedom Square F Between Treatments 64 8 Within Treatments (Error) 2 TOTAL 100 The number of degrees of freedom corresponding to within-treatments is
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In testing for the equality of k population means, the number of treatments is
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Part of an ANOVA table is shown below. Source of Sum of Degrees of Mean Variation Squares Freedom Square F Between Treatments 180 3 Within Treatments (Error) TOTAL 480 18 The mean square due to error (MSE) is
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