Exam 9: Principles of Research Design and Statistical Preliminaries for Analyzing Bivariate Relationships

A disturbance variable is one that is related to the independent variable (and hence,confounded with it)but that also affects the dependent variable.

(True/False)

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Question 101

Which of the following methods can be used in the design of a study to control for alternative explanations of the results?

(Multiple Choice)

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Question 102

Since observational independent variables will always be confounded with all other variables that are naturally related to them,_____ are typically not possible when an observational strategy is used.

(Multiple Choice)

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Question 103

One advantage of the between-subjects approach as compared with the within-subjects approach is that it is more economical in terms of the number of research participants.

(True/False)

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Question 104

A statistical test led Dr.Jones to incorrectly decide that his independent variable had no affect on the dependent variable,when in fact it did.Dr.Jones committed a(n)

(Multiple Choice)

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Question 105

A variable that influences the dependent variable but is unrelated to the independent variable is called a ____ variable.

(Multiple Choice)

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Question 106

Random assignment is feasible only when an investigator is using an _ strategy to "create" values on a(n)_ variable.

(Multiple Choice)

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Question 107

Between-subjects designs and within-subjects designs are both viable strategies when the _ is _ in nature.

(Multiple Choice)

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Question 108

The robustness of statistical test is determined by sample size only.

(True/False)

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Question 109

An advantage of using a within-subjects design instead of a between-subjects design is

(Multiple Choice)

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Question 110

Dr.Nan is studying the effects of Ginseng on recall.He has 2 groups of subjects, (20 subjects in each group).Subjects are given Ginseng or Placebo and then asked to recall a list of words they previously studied.However,to avoid confounds what should Dr.Nan do?

(Multiple Choice)

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Question 111

One advantage of the within-subjects approach is that it is more _ in terms of _.

(Multiple Choice)

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Question 112

With a(n)_____ variable,the values of the variable are "split up" between subjects instead of occurring completely within the same individuals.

(Multiple Choice)

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Question 113

The extent to which conclusions made on the basis of a statistical test are unaffected by violations of the assumptions underlying the test is called ____.

(Multiple Choice)

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Question 114

One disadvantage of using a within-subjects design is carry-over effects from condition to the next.

(True/False)

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Question 115

A disturbance variable increases _ by increasing variability _ groups.

(Multiple Choice)

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Question 116

Based on the Applications to the Analysis of Social Problems section of Chapter 9,historical variables that are confounded with age refer to

(Multiple Choice)

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Question 117

Experimental and observational strategies can be used together.

(True/False)

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Question 118

The ability to make a causal inference between two variables is a function of the statistical techniques one uses,not the research design used to generate the data that are analyzed by those statistical techniques.

(True/False)

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Question 119

What is a disturbance variable and how can they be controlled?

(Essay)

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Question 120

Showing 101 - 120 of 150

A disturbance variable is one that is related to the independent variable (and hence,confounded with it)but that also affects the dependent variable.

Which of the following methods can be used in the design of a study to control for alternative explanations of the results?

Since observational independent variables will always be confounded with all other variables that are naturally related to them,_____ are typically not possible when an observational strategy is used.

One advantage of the between-subjects approach as compared with the within-subjects approach is that it is more economical in terms of the number of research participants.

A statistical test led Dr.Jones to incorrectly decide that his independent variable had no affect on the dependent variable,when in fact it did.Dr.Jones committed a(n)

A variable that influences the dependent variable but is unrelated to the independent variable is called a ____ variable.

Random assignment is feasible only when an investigator is using an _ strategy to "create" values on a(n)_ variable.

Between-subjects designs and within-subjects designs are both viable strategies when the _ is _ in nature.

The robustness of statistical test is determined by sample size only.

An advantage of using a within-subjects design instead of a between-subjects design is

Dr.Nan is studying the effects of Ginseng on recall.He has 2 groups of subjects, (20 subjects in each group).Subjects are given Ginseng or Placebo and then asked to recall a list of words they previously studied.However,to avoid confounds what should Dr.Nan do?

One advantage of the within-subjects approach is that it is more _ in terms of _.

With a(n)_____ variable,the values of the variable are "split up" between subjects instead of occurring completely within the same individuals.

The extent to which conclusions made on the basis of a statistical test are unaffected by violations of the assumptions underlying the test is called ____.

One disadvantage of using a within-subjects design is carry-over effects from condition to the next.

A disturbance variable increases _ by increasing variability _ groups.

Based on the Applications to the Analysis of Social Problems section of Chapter 9,historical variables that are confounded with age refer to

Experimental and observational strategies can be used together.

The ability to make a causal inference between two variables is a function of the statistical techniques one uses,not the research design used to generate the data that are analyzed by those statistical techniques.

What is a disturbance variable and how can they be controlled?

Introduction and Mathematical Preliminaries

Frequency and Probability Distributions

Measures of Central Tendency and Variability

Percentiles,percentile Ranks,standard Scores,and the Normal Distribution

Pearson Correlation and Regression: Descriptive Aspects

Probability

Estimation and Sampling Distributions

Hypothesis Testing: Inferences About a Single Mean

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

Overview and Extension: Statistical Tests for More Complex Designs

Filters

Exam 9: Principles of Research Design and Statistical Preliminaries for Analyzing Bivariate Relationships

A disturbance variable is one that is related to the independent variable (and hence,confounded with it)but that also affects the dependent variable.

Which of the following methods can be used in the design of a study to control for alternative explanations of the results?

Since observational independent variables will always be confounded with all other variables that are naturally related to them,_____ are typically not possible when an observational strategy is used.

One advantage of the between-subjects approach as compared with the within-subjects approach is that it is more economical in terms of the number of research participants.

A statistical test led Dr.Jones to incorrectly decide that his independent variable had no affect on the dependent variable,when in fact it did.Dr.Jones committed a(n)

A variable that influences the dependent variable but is unrelated to the independent variable is called a ____ variable.

Random assignment is feasible only when an investigator is using an _____ strategy to "create" values on a(n)_____ variable.

Between-subjects designs and within-subjects designs are both viable strategies when the _____ is _____ in nature.

The robustness of statistical test is determined by sample size only.

An advantage of using a within-subjects design instead of a between-subjects design is

Dr.Nan is studying the effects of Ginseng on recall.He has 2 groups of subjects, (20 subjects in each group).Subjects are given Ginseng or Placebo and then asked to recall a list of words they previously studied.However,to avoid confounds what should Dr.Nan do?

One advantage of the within-subjects approach is that it is more _____ in terms of _____.

With a(n)_____ variable,the values of the variable are "split up" between subjects instead of occurring completely within the same individuals.

The extent to which conclusions made on the basis of a statistical test are unaffected by violations of the assumptions underlying the test is called ____.

One disadvantage of using a within-subjects design is carry-over effects from condition to the next.

A disturbance variable increases _____ by increasing variability _____ groups.

Based on the Applications to the Analysis of Social Problems section of Chapter 9,historical variables that are confounded with age refer to

Experimental and observational strategies can be used together.

The ability to make a causal inference between two variables is a function of the statistical techniques one uses,not the research design used to generate the data that are analyzed by those statistical techniques.

What is a disturbance variable and how can they be controlled?

Introduction and Mathematical Preliminaries

Frequency and Probability Distributions

Measures of Central Tendency and Variability

Percentiles,percentile Ranks,standard Scores,and the Normal Distribution

Pearson Correlation and Regression: Descriptive Aspects

Probability

Estimation and Sampling Distributions

Hypothesis Testing: Inferences About a Single Mean

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

Overview and Extension: Statistical Tests for More Complex Designs

Filters

Random assignment is feasible only when an investigator is using an _ strategy to "create" values on a(n)_ variable.

Between-subjects designs and within-subjects designs are both viable strategies when the _ is _ in nature.

One advantage of the within-subjects approach is that it is more _ in terms of _.

A disturbance variable increases _ by increasing variability _ groups.