Question 1

The sum of a set of ranks can be found from the formula:

Accepted Answer

A)  n(n - 1)/2 
B)  n(n + 1)/2 
C)  n(n - 1) 
D)  (n1 - 1) + (n2 - 1) 
A)  n(n - 1)/2 
B)  n(n + 1)/2 
C)  n(n - 1) 
D)  (n1 - 1) + (n2 - 1) B

Question 2

Dr. Smith wishes to compare three widely used sleeping pills 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.

Accepted Answer

The answer of Dr. Smith wishes to compare three widely...

Question 3

The most important reason for using assumption-freer statistical tests has to do with

Accepted Answer

A)  matters of computation 
B)  statistical assumptions 
C)  power and Type II error 
D)  random sampling 
A)  matters of computation 
B)  statistical assumptions 
C)  power and Type II error 
D)  random sampling B

Question 4

Which, if any, of the first three statements is false?

Accepted Answer

A)  the Mann-Whitney U test is an alternative to the test of the difference between means of two independent samples 
B)  the sign test is an alternative to the test of the difference between means of two dependent samples 
C)  the Kruskal-Wallis test is an alternative to one-way analysis of variance 
D)  all of the above are true 
A)  the Mann-Whitney U test is an alternative to the test of the difference between means of two independent samples 
B)  the sign test is an alternative to the test of the difference between means of two dependent samples 
C)  the Kruskal-Wallis test is an alternative to one-way analysis of variance 
D)  all of the above are true

Question 5

If the following scores: 4, 2, 3, 6, 4, are placed in rank order, a score of 4 would be assigned a rank order of

Accepted Answer

A)  3 
B)  4 
C)  3.5 
D)  4.5 
A)  3 
B)  4 
C)  3.5 
D)  4.5

Question 6

Compared to z, t, and F, assumption-freer statistical tests become increasingly attractive when

Accepted Answer

A)  normality of distribution can be assumed 
B)  sample size is large 
C)  homogeneity of variance is the rule 
D)  sample size is small 
A)  normality of distribution can be assumed 
B)  sample size is large 
C)  homogeneity of variance is the rule 
D)  sample size is small

Question 7

Which of the following loses most in efficiency relative to its counterpart test about means?

Accepted Answer

A)  Mann-Whitney U test 
B)  sign-test 
C)  Kruskal-Wallis test 
D)  Wilcoxon signed-ranks test 
A)  Mann-Whitney U test 
B)  sign-test 
C)  Kruskal-Wallis test 
D)  Wilcoxon signed-ranks test

Question 8

The measure that seems most reasonable to examine upon obtaining significant results from a Mann-Whitney U test is the

Accepted Answer

A)  median 
B)  mean 
C)  variance 
D)  standard deviation 
A)  median 
B)  mean 
C)  variance 
D)  standard deviation

Question 9

A randomization test compares the obtained sample results with

Accepted Answer

A)  the sampling distribution of   
B)  the theoretical distribution of   
C)  all possible combinations of   using the sample data 
D)  any of the above 
A)  the sampling distribution of   
B)  the theoretical distribution of   
C)  all possible combinations of   using the sample data 
D)  any of the above

Question 10

The Mann-Whitney, Kruskal-Wallis, sign, and Wilcoxon signed-ranks tests are tests about

Accepted Answer

A)  the difference between two (or more) means 
B)  the difference between two (or more) medians 
C)  the difference between two (or more) standard deviations 
D)  the difference between two (or more) distributions 
A)  the difference between two (or more) means 
B)  the difference between two (or more) medians 
C)  the difference between two (or more) standard deviations 
D)  the difference between two (or more) distributions

Question 11

Tests and measures involving rank order generally

Accepted Answer

A)  will be unsatisfactory when there are ties in rank 
B)  will be reasonably satisfactory when there are ties in rank 
C)  will be reasonably satisfactory when there are not a lot of ties in rank 
D)  are satisfactory irrespective of the presence of ties in rank 
A)  will be unsatisfactory when there are ties in rank 
B)  will be reasonably satisfactory when there are ties in rank 
C)  will be reasonably satisfactory when there are not a lot of ties in rank 
D)  are satisfactory irrespective of the presence of ties in rank

Question 12

The Wilcoxon signed-ranks test is a particularly dubious choice if

Accepted Answer

A)  population variances are unknown 
B)  n's are small 
C)  a difference of k score points means something different at various points in the scale 
D)  normality of distribution cannot be assumed 
A)  population variances are unknown 
B)  n's are small 
C)  a difference of k score points means something different at various points in the scale 
D)  normality of distribution cannot be assumed

Question 13

Kruskal-Wallis test:Mann-Whitney U test as

Accepted Answer

A)  t test for dependent means:one-way ANOVA 
B)  one-way ANOVA:two-way ANOVA 
C)  one-way ANOVA:t test for independent means 
D)  t test for dependent means:t test for independent means 
A)  t test for dependent means:one-way ANOVA 
B)  one-way ANOVA:two-way ANOVA 
C)  one-way ANOVA:t test for independent means 
D)  t test for dependent means:t test for independent means

Question 14

Your casual observations suggest that sons, upon maturity, are in general taller than their fathers. A friend, on the other hand, argues that the opposite is true. In order to check this out, you measure the heights of a sample of nine father-son pairs. The following are the results (to the nearest inch):

Accepted Answer

(a) - (b)If + represents a tal

Question 15

The basic data from which all other computations flow when performing a Mann-Whitney U test or a Kruskal-Wallis test are

Accepted Answer

A)     and   for each group separately 
B)  deviation scores based on combined groups 
C)  ranks within each group separately 
D)  ranks based on all groups combined 
A)     and   for each group separately 
B)  deviation scores based on combined groups 
C)  ranks within each group separately 
D)  ranks based on all groups combined

Question 16

A Mann-Whitney U test is performed and significant results are obtained. This indicates a population difference with regard to

Accepted Answer

A)  central tendency 
B)  variability 
C)  shape 
D)  any or all of the above 
A)  central tendency 
B)  variability 
C)  shape 
D)  any or all of the above

Question 17

The relative insensitivity of the sign test is derived in part from the fact that

Accepted Answer

A)  it can only be used with small samples 
B)  it is not responsive to the question "how much?" 
C)  restrictive assumptions characterize it 
D)  all of the above are true 
A)  it can only be used with small samples 
B)  it is not responsive to the question "how much?" 
C)  restrictive assumptions characterize it 
D)  all of the above are true

Question 18

We wish to determine if two strains of laboratory rats differ in maze-running ability. Random samples of naive (never been experimented on) rats are selected from each strain, and each rat is run through a test maze until it can negotiate the maze with no errors on two consecutive trials. The following results are obtained (number of trials to learn):
   Apply the Mann-Whitney test. Use 
   
 Interpret the outcome using appropriate descriptive statistics.

Accepted Answer

@#IMG-DLM& 
 critical values (

Question 19

The sign test could be considered as an alternative approach to the test of a hypothesis about

Accepted Answer

A)  a single mean 
B)  the difference between two dependent means 
C)  the difference between two independent means 
D)  the difference among several independent means 
A)  a single mean 
B)  the difference between two dependent means 
C)  the difference between two independent means 
D)  the difference among several independent means

The sum of a set of ranks can be found from the formula:

The most important reason for using assumption-freer statistical tests has to do with

Which, if any, of the first three statements is false?

If the following scores: 4, 2, 3, 6, 4, are placed in rank order, a score of 4 would be assigned a rank order of

Compared to z, t, and F, assumption-freer statistical tests become increasingly attractive when

Which of the following loses most in efficiency relative to its counterpart test about means?

The measure that seems most reasonable to examine upon obtaining significant results from a Mann-Whitney U test is the

A randomization test compares the obtained sample results with

The Mann-Whitney, Kruskal-Wallis, sign, and Wilcoxon signed-ranks tests are tests about

Tests and measures involving rank order generally

The Wilcoxon signed-ranks test is a particularly dubious choice if

Kruskal-Wallis test:Mann-Whitney U test as

The basic data from which all other computations flow when performing a Mann-Whitney U test or a Kruskal-Wallis test are

A Mann-Whitney U test is performed and significant results are obtained. This indicates a population difference with regard to

The relative insensitivity of the sign test is derived in part from the fact that

The sign test could be considered as an alternative approach to the test of a hypothesis about

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

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

Factorial Analysis of Variance

Chi-Square and Inference About Frequencies

Filters

Exam 21: Some Almost Assumption-Free Tests

The sum of a set of ranks can be found from the formula:

The most important reason for using assumption-freer statistical tests has to do with

Which, if any, of the first three statements is false?

If the following scores: 4, 2, 3, 6, 4, are placed in rank order, a score of 4 would be assigned a rank order of

Compared to z, t, and F, assumption-freer statistical tests become increasingly attractive when

Which of the following loses most in efficiency relative to its counterpart test about means?

The measure that seems most reasonable to examine upon obtaining significant results from a Mann-Whitney U test is the

A randomization test compares the obtained sample results with

The Mann-Whitney, Kruskal-Wallis, sign, and Wilcoxon signed-ranks tests are tests about

Tests and measures involving rank order generally

The Wilcoxon signed-ranks test is a particularly dubious choice if

Kruskal-Wallis test:Mann-Whitney U test as

The basic data from which all other computations flow when performing a Mann-Whitney U test or a Kruskal-Wallis test are

A Mann-Whitney U test is performed and significant results are obtained. This indicates a population difference with regard to

The relative insensitivity of the sign test is derived in part from the fact that

The sign test could be considered as an alternative approach to the test of a hypothesis about

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

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

Factorial Analysis of Variance

Chi-Square and Inference About Frequencies

Filters