Question 1

Very few research problems require that more than two variables be simultaneously studied.

Accepted Answer

A) True 
 B)False

Question 2

If ranks are the chosen focus of study,then _____ methods should be used.

Accepted Answer

A) experimental 
B) multiple 
C) parametric 
D) nonparametric 
A) experimental 
B) multiple 
C) parametric 
D) nonparametric

Question 3

The American Heart Association (AHA)found that vitamin A enhances visual acuity.They had a total of 10,000 subjects half who received a vitamin A supplement and the other half received a placebo and visual acuity was measured 3 months after the treatment was given.The AHA should use the ____________________ to analyze the data.

Accepted Answer

Independen

Question 4

Some psychologists have argued that the question "is there a relationship between two variables" is meaningless,in part because:

Accepted Answer

A) psychological research is difficult to carry out 
B) the alternative hypothesis is almost always false 
C) the null hypothesis is almost always false 
D) empirical relationships are,in fact,very rare 
A) psychological research is difficult to carry out 
B) the alternative hypothesis is almost always false 
C) the null hypothesis is almost always false 
D) empirical relationships are,in fact,very rare

Question 5

In multiple regression analysis,each predictor has a "slope" (â)that is called a:

Accepted Answer

A) factor 
B) squared multiple correlation coefficient 
C) regression coefficient 
D) multiple r 
A) factor 
B) squared multiple correlation coefficient 
C) regression coefficient 
D) multiple r

Question 6

Hana is measuring the effects of 3 does of estrogen on mood changes in women.She has 3 groups of subjects (control,3mg and 5mg group).After subjects are randomly divided into groups and administered estrogen or placebo their moods were evaluated with a mood questionnaire.What statistical test should he use?

Accepted Answer

Hana should use a On

Question 7

With only two or three values on the dependent variable,there will be a large number of ties in ranks,and numerous ties can create serious problems for ranked-based approaches.

Accepted Answer

A) True 
 B)False

Question 8

Inference of a relationship between two variables depends on the comparison of means.

Accepted Answer

A) True 
 B)False

Question 9

Dr.Smith is studying the relationship between the use of a Ipod (portable headphones)and the ability to perceive sounds that have high pitches.She has 2 groups of subjects: one group that does not listen to earphones (N=20)and a group that does listen to earphones (frequently)(N=20).After collecting her data,she has asked you to analyze her results.What statistical test will you use?

Accepted Answer

A) Correlate t-test 
B) Independent t-test 
C) One-way ANOVA (between subjects) 
D) ANOVA (repeated measures) 
E) Two-way ANOVA (between subjects) 
A) Correlate t-test 
B) Independent t-test 
C) One-way ANOVA (between subjects) 
D) ANOVA (repeated measures) 
E) Two-way ANOVA (between subjects)

Question 10

Statistical techniques that analyze the relationship between three or more variables are referred to as multivariate statistics.

Accepted Answer

A) True 
 B)False

Question 11

A parametric test should NOT be used in situations where

Accepted Answer

A) the dependent variable is measure on an interval level. 
B) the distributional assumptions of the parametric test have been violated but the test is robust to these violations. 
C) the distributional assumptions of the parametric test have been violated and the test is not robust to these violations. 
D) none of these 
A) the dependent variable is measure on an interval level. 
B) the distributional assumptions of the parametric test have been violated but the test is robust to these violations. 
C) the distributional assumptions of the parametric test have been violated and the test is not robust to these violations. 
D) none of these

Question 12

The power of a statistical test is influenced by_____.

Accepted Answer

A) the strength of the relationship between 2 variables 
B) sample size 
C) alpha level 
D) both a & c 
E) All of these are correct 
A) the strength of the relationship between 2 variables 
B) sample size 
C) alpha level 
D) both a & c 
E) All of these are correct

Question 13

When sample sizes are small,power will tend to be_____,everything else being equal.

Accepted Answer

A) low 
B) high 
C) moderate 
D) there is no affect 
E) none of these 
A) low 
B) high 
C) moderate 
D) there is no affect 
E) none of these

Question 14

Given two between-subjects variables that are multi-valued and measured on a level that at least approximates interval characteristics,the most common method of analysis is:

Accepted Answer

A) Spearman rank-order correlation 
B) Pearson correlation 
C) point-biserial correlation 
D) nonparametric correlation 
A) Spearman rank-order correlation 
B) Pearson correlation 
C) point-biserial correlation 
D) nonparametric correlation

Question 15

Multiple regression involves the prediction of a criterion from two or more predictors.

Accepted Answer

A) True 
 B)False

Question 16

Multivariate Analysis of Variance (MANOVA)is used when there is_____.

Accepted Answer

A) Two levels of the independent variable 
B) Two or more levels of the dependent variable 
C) Nominal scales of measurement 
D) None of these 
A) Two levels of the independent variable 
B) Two or more levels of the dependent variable 
C) Nominal scales of measurement 
D) None of these

Question 17

If you set your alpha level at .01,nondirectional,and you are using a correlated t-test and have a total of 30 subjects what is your table or critical t ?

Accepted Answer

A) 2.045 
B) 2.048 
C) 2.756 
D) 1.699 
E) none of these 
A) 2.045 
B) 2.048 
C) 2.756 
D) 1.699 
E) none of these

Question 18

In the equation Y =  
,which of the following symbols is a regression coefficient?

Accepted Answer

A)    
B)   
1 
C)   
2 
D)    
E) both b and c 
A)    
B)   
1 
C)   
2 
D)    
E) both b and c

Question 19

Generally speaking,parametric methods are not conducive to analyzing qualitative variables.

Accepted Answer

A) True 
 B)False

Question 20

A non-parametric test should be pursued if there is reason to believe that the distributional assumptions of the corresponding parametric test have been violated to the extent that the parametric test is not robust.

Accepted Answer

A) True 
 B)False

Very few research problems require that more than two variables be simultaneously studied.

If ranks are the chosen focus of study,then _____ methods should be used.

Some psychologists have argued that the question "is there a relationship between two variables" is meaningless,in part because:

In multiple regression analysis,each predictor has a "slope" (â)that is called a:

With only two or three values on the dependent variable,there will be a large number of ties in ranks,and numerous ties can create serious problems for ranked-based approaches.

Inference of a relationship between two variables depends on the comparison of means.

Statistical techniques that analyze the relationship between three or more variables are referred to as multivariate statistics.

A parametric test should NOT be used in situations where

The power of a statistical test is influenced by_____.

When sample sizes are small,power will tend to be_____,everything else being equal.

Given two between-subjects variables that are multi-valued and measured on a level that at least approximates interval characteristics,the most common method of analysis is:

Multiple regression involves the prediction of a criterion from two or more predictors.

Multivariate Analysis of Variance (MANOVA)is used when there is_____.

If you set your alpha level at .01,nondirectional,and you are using a correlated t-test and have a total of 30 subjects what is your table or critical t ?

In the equation Y = ,which of the following symbols is a regression coefficient?

Generally speaking,parametric methods are not conducive to analyzing qualitative variables.

A non-parametric test should be pursued if there is reason to believe that the distributional assumptions of the corresponding parametric test have been violated to the extent that the parametric test is not robust.

Introduction and Mathematical Preliminaries

Frequency and Probability Distributions

Percentiles percentile Ranks standard Scores and the Normal Distribution

Pearson Correlation and Regression: Descriptive Aspects

Measures of Central Tendency and Variability

Estimation and Sampling Distributions

Hypothesis Testing: Inferences About a Single Mean

Probability

Principles of Research Design and Statistical Preliminaries for Analyzing Bivariate Relationships

Independent Groups T -Test

Correlated Groups T-Test

One-Way Repeated Measures Analysis of Variance

Pearson Correlation and Regression: Inferential Aspects

Chi-Square Test

Nonparametric Statistics

Two-Way Between-Subjects Analysis of Variance

Filters

Exam 18: Overview and Extension: Statistical Tests for More Complex Designs

Very few research problems require that more than two variables be simultaneously studied.

If ranks are the chosen focus of study,then _____ methods should be used.

Some psychologists have argued that the question "is there a relationship between two variables" is meaningless,in part because:

In multiple regression analysis,each predictor has a "slope" (â)that is called a:

With only two or three values on the dependent variable,there will be a large number of ties in ranks,and numerous ties can create serious problems for ranked-based approaches.

Inference of a relationship between two variables depends on the comparison of means.

Statistical techniques that analyze the relationship between three or more variables are referred to as multivariate statistics.

A parametric test should NOT be used in situations where

The power of a statistical test is influenced by_____.

When sample sizes are small,power will tend to be_____,everything else being equal.

Given two between-subjects variables that are multi-valued and measured on a level that at least approximates interval characteristics,the most common method of analysis is:

Multiple regression involves the prediction of a criterion from two or more predictors.

Multivariate Analysis of Variance (MANOVA)is used when there is_____.

If you set your alpha level at .01,nondirectional,and you are using a correlated t-test and have a total of 30 subjects what is your table or critical t ?

In the equation Y = ,which of the following symbols is a regression coefficient?

Generally speaking,parametric methods are not conducive to analyzing qualitative variables.

A non-parametric test should be pursued if there is reason to believe that the distributional assumptions of the corresponding parametric test have been violated to the extent that the parametric test is not robust.

Introduction and Mathematical Preliminaries

Frequency and Probability Distributions

Percentiles percentile Ranks standard Scores and the Normal Distribution

Pearson Correlation and Regression: Descriptive Aspects

Measures of Central Tendency and Variability

Estimation and Sampling Distributions

Hypothesis Testing: Inferences About a Single Mean

Probability

Principles of Research Design and Statistical Preliminaries for Analyzing Bivariate Relationships

Independent Groups T -Test

Correlated Groups T-Test

One-Way Repeated Measures Analysis of Variance

Pearson Correlation and Regression: Inferential Aspects

Chi-Square Test

Nonparametric Statistics

Two-Way Between-Subjects Analysis of Variance

Filters