Question 1

Planned comparisons should be

Accepted Answer

A)  specified in advance of collecting the data 
B)  as few as possible 
C)  as independent of each other as possible 
D)  all of the above 
A)  specified in advance of collecting the data 
B)  as few as possible 
C)  as independent of each other as possible 
D)  all of the above

Question 2

An orthogonal comparison is most nearly

Accepted Answer

A)  an independent comparison 
B)  a post hoc comparison 
C)  a planned comparison 
D)  any of the above 
A)  an independent comparison 
B)  a post hoc comparison 
C)  a planned comparison 
D)  any of the above

Question 3

In analysis of variance, a comparison could compare

Accepted Answer

A)  a control condition with the average of several experimental conditions 
B)  an experimental condition with a control condition 
C)  the average of two experimental conditions with the average of two control conditions 
D)  any of the above 
A)  a control condition with the average of several experimental conditions 
B)  an experimental condition with a control condition 
C)  the average of two experimental conditions with the average of two control conditions 
D)  any of the above

Question 4

Which of the following is incorrect

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 5

Which of the following, obtained for each group separately, are the basic quantities from which all other computations flow when performing a one-way ANOVA?

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 6

In the analysis of variance F test, the quantity that reflects the treatment effect

Accepted Answer

A)  is always placed in the numerator 
B)  is always placed in the denominator 
C)  is sometimes placed in the numerator and sometimes in the denominator 
D)  is excluded from F 
A)  is always placed in the numerator 
B)  is always placed in the denominator 
C)  is sometimes placed in the numerator and sometimes in the denominator 
D)  is excluded from F

Question 7

The use of the single symbol   
 to represent inherent variance for all groups follows logically from

Accepted Answer

A)  the general form of a variance estimate 
B)  the mathematical properties associated with variance 
C)  the independence of inherent variation and differential treatment effects 
D)  the assumption of homogeneity of variance 
A)  the general form of a variance estimate 
B)  the mathematical properties associated with variance 
C)  the independence of inherent variation and differential treatment effects 
D)  the assumption of homogeneity of variance

Question 8

In one-way analysis of variance involving three groups, the alternative hypothesis would be considered correct if, in the population,

Accepted Answer

A)  all means were equal 
B)  two means are equal but the third is different 
C)  all three means have different values 
D)  either (b) or (c) above is true 
A)  all means were equal 
B)  two means are equal but the third is different 
C)  all three means have different values 
D)  either (b) or (c) above is true

Question 9

In an analysis of variance problem, the total number of degrees of freedom is

Accepted Answer

A)  nS1U1B1totalS1U1B0 
B)    
C)  n-k 
D)  nS1U1B1totalS1U1B0 - 1 
A)  nS1U1B1totalS1U1B0 
B)    
C)  n-k 
D)  nS1U1B1totalS1U1B0 - 1

Question 10

In ANOVA for repeated measures, SSW is partitioned into

Accepted Answer

A)  SSbet and SSsubjects 
B)  SSbet and SSresid 
C)  SSsubj and SStotal 
D)  SSsubj and SSresid 
A)  SSbet and SSsubjects 
B)  SSbet and SSresid 
C)  SSsubj and SStotal 
D)  SSsubj and SSresid

Question 11

If study of the outcome of a one-way ANOVA suggests examination of a particular comparison, it would be better to study it as

Accepted Answer

A)  a planned comparison 
B)  a post hoc comparison 
C)  an orthogonal comparison 
D)  a dependent comparison 
A)  a planned comparison 
B)  a post hoc comparison 
C)  an orthogonal comparison 
D)  a dependent comparison

Question 12

A particular personality inventory has 22 different scales for measuring 22 different traits. Each scale is standardized to have a mean of 50 for a national norm group. Dr. Snorf administers the entire inventory to a sample of college students and, for each scale, tests 
   
 against 
   
($\alpha$= .05). Significant results are found only for the Responsibility Scale. On the basis of these results, Dr. Snorf reports that his college students are more responsible than the national group. Any comment?

Accepted Answer

For @#IMG-DLM& 
we would expect 5%, or a

Question 13

Variability of group means about the grand mean affords an indication of

Accepted Answer

A)  inherent variation 
B)  variation attributable to treatment effect, when present 
C)  a combination of (a) and (b) above 
D)  none of the above 
A)  inherent variation 
B)  variation attributable to treatment effect, when present 
C)  a combination of (a) and (b) above 
D)  none of the above

Question 14

In the two-sample, independent-groups design,

Accepted Answer

A)  2t 
B)  t/2 
C)  2t2 
D)  t2 
A)  2t 
B)  t/2 
C)  2t2 
D)  t2

Question 15

The following are the scores from two groups of two cases each:
Group 1: 2, 4
Group 2: 4, 6 
SSS1U1B1totalS1U1B0 =

Accepted Answer

A)  3 
B)  4 
C)  6 
D)  8 
A)  3 
B)  4 
C)  6 
D)  8

Question 16

A planned comparison is one that was planned

Accepted Answer

A)  before the study was completed 
B)  before the study was completed but after the major comparisons were made 
C)  after the outcome of the study was inspected 
D)  any of the above situations 
A)  before the study was completed 
B)  before the study was completed but after the major comparisons were made 
C)  after the outcome of the study was inspected 
D)  any of the above situations

Question 17

Dr. Smith wishes to compare three widely used sleeping preparations with regard to possible "hangover" effects. Twelve volunteers are given a problem-solving test at 9:00 a.m. after having been administered the standard recommended dose of one of the preparations (according to random assignment) the night before. The results are given below. 
(a) Give $H_0 and H_A$. 
(b) Is there a significant treatment effect $(use \alpha = .05)$? 
(c) If significant results are obtained in (b) use Tukey's HSD test (α = .05) to make all possible pairwise comparisons among the groups. Draw final conclusions.

Accepted Answer

@#IMG-DLM& 
(e) reject 
 @#IMG-DLM& 
 
 @#IMG-DLM& 
 larger

Question 18

One-way analysis of variance can be considered an extension of

Accepted Answer

A)  t test of   
B)  test for homogeneity of variance 
C)  simple randomized design 
D)  simple ANOVA 
A)  t test of   
B)  test for homogeneity of variance 
C)  simple randomized design 
D)  simple ANOVA

Question 19

leads to an estimate of

Accepted Answer

A)  within-group variation 
B)  between-group variation 
C)  total variation 
D)  none of the above 
A)  within-group variation 
B)  between-group variation 
C)  total variation 
D)  none of the above

Question 20

leads to an estimate of

Accepted Answer

A)  within-group variation 
B)  between-group variation 
C)  total variation 
D)  none of the above 
A)  within-group variation 
B)  between-group variation 
C)  total variation 
D)  none of the above

Planned comparisons should be

An orthogonal comparison is most nearly

In analysis of variance, a comparison could compare

Which of the following is incorrect

Which of the following, obtained for each group separately, are the basic quantities from which all other computations flow when performing a one-way ANOVA?

In the analysis of variance F test, the quantity that reflects the treatment effect

The use of the single symbol to represent inherent variance for all groups follows logically from

In one-way analysis of variance involving three groups, the alternative hypothesis would be considered correct if, in the population,

In an analysis of variance problem, the total number of degrees of freedom is

In ANOVA for repeated measures, SS_W is partitioned into

If study of the outcome of a one-way ANOVA suggests examination of a particular comparison, it would be better to study it as

Variability of group means about the grand mean affords an indication of

In the two-sample, independent-groups design,

The following are the scores from two groups of two cases each: Group 1: 2, 4 Group 2: 4, 6 SS_total =

A planned comparison is one that was planned

One-way analysis of variance can be considered an extension of

leads to an estimate of

leads to an estimate of

Introduction

Frequency Distributions, Percentiles,

Graphic Representation of Frequency Distributions

Central Tendency

Variability and Standard Z Scores

Standard Scores and the Normal Curve

Correlation

Prediction

Interpretive Aspects of Correlation and Regression

Probability

Random Sampling and Sampling Distributions

Introduction to Statistical Inference: Testing Hypotheses About Single Means Z and T

Interpreting the Results of Hypothesis Testing: Effect Size, Type I and Type II Errors, and Power

Testing Hypotheses About the Difference Between Two Independent Groups

Testing for a Difference

Inference About Correlation Coefficients

An Alternative to Hypothesis Testing: Confidence Intervals

Factorial Analysis of Variance

Chi-Square and Inference About Frequencies

Some Almost Assumption-Free Tests

Filters

Exam 18: Testing for Differences Among Three or More Groups: One-Way Analysis of Variance and Some Alternatives

Planned comparisons should be

An orthogonal comparison is most nearly

In analysis of variance, a comparison could compare

Which of the following is incorrect

Which of the following, obtained for each group separately, are the basic quantities from which all other computations flow when performing a one-way ANOVA?

In the analysis of variance F test, the quantity that reflects the treatment effect

The use of the single symbol to represent inherent variance for all groups follows logically from

In one-way analysis of variance involving three groups, the alternative hypothesis would be considered correct if, in the population,

In an analysis of variance problem, the total number of degrees of freedom is

In ANOVA for repeated measures, SSW is partitioned into

If study of the outcome of a one-way ANOVA suggests examination of a particular comparison, it would be better to study it as

Variability of group means about the grand mean affords an indication of

In the two-sample, independent-groups design,

The following are the scores from two groups of two cases each: Group 1: 2, 4 Group 2: 4, 6 SStotal =

A planned comparison is one that was planned

One-way analysis of variance can be considered an extension of

leads to an estimate of

leads to an estimate of

Introduction

Frequency Distributions, Percentiles,

Graphic Representation of Frequency Distributions

Central Tendency

Variability and Standard Z Scores

Standard Scores and the Normal Curve

Correlation

Prediction

Interpretive Aspects of Correlation and Regression

Probability

Random Sampling and Sampling Distributions

Introduction to Statistical Inference: Testing Hypotheses About Single Means Z and T

Interpreting the Results of Hypothesis Testing: Effect Size, Type I and Type II Errors, and Power

Testing Hypotheses About the Difference Between Two Independent Groups

Testing for a Difference

Inference About Correlation Coefficients

An Alternative to Hypothesis Testing: Confidence Intervals

Factorial Analysis of Variance

Chi-Square and Inference About Frequencies

Some Almost Assumption-Free Tests

Filters

In ANOVA for repeated measures, SS_W is partitioned into

The following are the scores from two groups of two cases each: Group 1: 2, 4 Group 2: 4, 6 SS_total =