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

Dr.Johnson hypothesizes that nutrasweet reduces short-term memory.In order to test her hypothesis she gives 10 subjects a beverage containing nutrasweet (treatment group)and 10 subjects a beverage without nutrasweet (control group).She then measures the subject's ability to recall a list of numbers.In this study the independent variable is_and the dependent variable is.

(Multiple Choice)

4.7/5

(40)

Question 121

Random assignment is possible with

(Multiple Choice)

4.9/5

(37)

Question 122

Which of the following levels of measurement can be appropriately analyzed with nonparametric statistics?

(Multiple Choice)

4.8/5

(29)

Question 123

The ____________________is a computer simulation which allows statisticians to determine if a data set violates an assumption.

(Short Answer)

4.9/5

(31)

Question 124

A _____ variable is one that is related to the independent variable (the presumed influence)and that affects the dependent variable (the presumed effect),rendering a relational inference between the independent variable and the dependent variable ambiguous.

(Multiple Choice)

4.8/5

(31)

Question 125

The advantage of including a control group when utilizing an experimental strategy is that it provides a baseline for evaluating the effects of the experimental manipulation.

(True/False)

4.7/5

(33)

Question 126

The major disadvantage of holding a variable constant is that it may restrict the generalizability of the results.

(True/False)

4.8/5

(32)

Question 127

What three assumptions are important or essential to parametric test?

(Essay)

4.9/5

(31)

Question 128

One way an investigator can reduce sampling error is to reduce the sample sizes for the various groups.

(True/False)

4.8/5

(37)

Question 129

For many observational independent variables,only _____ designs are applicable.

(Multiple Choice)

4.9/5

(37)

Question 130

In a truly random sample from the population

(Multiple Choice)

4.7/5

(29)

Question 131

The ____________________variable is manipulated by the researcher.

(Short Answer)

4.9/5

(35)

Question 132

Scores on a math aptitude exam for 30 males were compared to those of 30 females.The appropriate design for testing the significance of the difference between the two group means is a

(Multiple Choice)

4.9/5

(34)

Question 133

Random assignment guarantees that the research groups will not differ beforehand on the dependent variable.

(True/False)

4.9/5

(29)

Question 134

A procedure for reducing sampling error is to define the groups such that the variances of scores in the populations (ó²)will be smaller.

(True/False)

4.9/5

(38)

Question 135

Jacob is studying the development of motor coordination in monkeys from birth to old age for his Master's thesis.However,he only has one year to collect his data.What type of design should he use?

(Multiple Choice)

4.7/5

(26)

Question 136

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

(Multiple Choice)

4.8/5

(33)

Question 137

In a(n)_____design,an individual in one condition is paired with a different individual in another condition who has similar characteristics.

(Multiple Choice)

4.9/5

(39)

Question 138

Robustness refers to the extent to which conclusions drawn on the basis of a statistical test (for example,rejection of the null hypothesis)are unaffected by violations of the assumptions underlying the test.

(True/False)

4.7/5

(28)

Question 139

The ____________________variable is measured by the researcher.

(Short Answer)

4.7/5

(29)

Question 140

Showing 121 - 140 of 150

Random assignment is possible with

Which of the following levels of measurement can be appropriately analyzed with nonparametric statistics?

The ____________________is a computer simulation which allows statisticians to determine if a data set violates an assumption.

A _____ variable is one that is related to the independent variable (the presumed influence)and that affects the dependent variable (the presumed effect),rendering a relational inference between the independent variable and the dependent variable ambiguous.

The advantage of including a control group when utilizing an experimental strategy is that it provides a baseline for evaluating the effects of the experimental manipulation.

The major disadvantage of holding a variable constant is that it may restrict the generalizability of the results.

What three assumptions are important or essential to parametric test?

One way an investigator can reduce sampling error is to reduce the sample sizes for the various groups.

For many observational independent variables,only _____ designs are applicable.

In a truly random sample from the population

The ____________________variable is manipulated by the researcher.

Scores on a math aptitude exam for 30 males were compared to those of 30 females.The appropriate design for testing the significance of the difference between the two group means is a

Random assignment guarantees that the research groups will not differ beforehand on the dependent variable.

A procedure for reducing sampling error is to define the groups such that the variances of scores in the populations (ó²)will be smaller.

Jacob is studying the development of motor coordination in monkeys from birth to old age for his Master's thesis.However,he only has one year to collect his data.What type of design should he use?

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

In a(n)_____design,an individual in one condition is paired with a different individual in another condition who has similar characteristics.

Robustness refers to the extent to which conclusions drawn on the basis of a statistical test (for example,rejection of the null hypothesis)are unaffected by violations of the assumptions underlying the test.

The ____________________variable is measured by the researcher.

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

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

Random assignment is possible with

Which of the following levels of measurement can be appropriately analyzed with nonparametric statistics?

The ____________________is a computer simulation which allows statisticians to determine if a data set violates an assumption.

A _____ variable is one that is related to the independent variable (the presumed influence)and that affects the dependent variable (the presumed effect),rendering a relational inference between the independent variable and the dependent variable ambiguous.

The advantage of including a control group when utilizing an experimental strategy is that it provides a baseline for evaluating the effects of the experimental manipulation.

The major disadvantage of holding a variable constant is that it may restrict the generalizability of the results.

What three assumptions are important or essential to parametric test?

One way an investigator can reduce sampling error is to reduce the sample sizes for the various groups.

For many observational independent variables,only _____ designs are applicable.

In a truly random sample from the population

The ____________________variable is manipulated by the researcher.

Scores on a math aptitude exam for 30 males were compared to those of 30 females.The appropriate design for testing the significance of the difference between the two group means is a

Random assignment guarantees that the research groups will not differ beforehand on the dependent variable.

A procedure for reducing sampling error is to define the groups such that the variances of scores in the populations (ó2)will be smaller.

Jacob is studying the development of motor coordination in monkeys from birth to old age for his Master's thesis.However,he only has one year to collect his data.What type of design should he use?

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

In a(n)_____design,an individual in one condition is paired with a different individual in another condition who has similar characteristics.

Robustness refers to the extent to which conclusions drawn on the basis of a statistical test (for example,rejection of the null hypothesis)are unaffected by violations of the assumptions underlying the test.

The ____________________variable is measured by the researcher.

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

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

A procedure for reducing sampling error is to define the groups such that the variances of scores in the populations (ó²)will be smaller.