Question 1

If a set of scores has a mean of 45 and a standard deviation of 9,then the scores have a variance of

Accepted Answer

A) 3. 
B) 4.5. 
C) 18. 
D) 81. 
A) 3. 
B) 4.5. 
C) 18. 
D) 81.

Question 2

It is possible for a distribution of scores to have more than one

Accepted Answer

A) mean. 
B) median. 
C) mode. 
D) standard deviation. 
A) mean. 
B) median. 
C) mode. 
D) standard deviation.

Question 3

In a distribution with a mean of M = 36 and a standard deviation of SD = 8,a score of 40 would be considered an extreme value.

Accepted Answer

A) True 
 B)False

Question 4

The data for a correlation are displayed in a graph and show a set of points tightly clustered around a line sloping up to the right.Which of the following is the best estimate for the correlation?

Accepted Answer

A) +.10 
B) +.90 
C) - .10 
D) - .90 
A) +.10 
B) +.90 
C) - .10 
D) - .90

Question 5

A negative correlation means that as the X values decrease,the Y values also tend to decrease.

Accepted Answer

A) True 
 B)False

Question 6

The concept of degrees of freedom is associated with

Accepted Answer

A) the mean for a sample. 
B) the median for a sample. 
C) the mode for a sample. 
D) the variance for a sample. 
A) the mean for a sample. 
B) the median for a sample. 
C) the mode for a sample. 
D) the variance for a sample.

Question 7

Of the following research statistics,which one is designed to correct for chance agreement between two raters when measuring inter-rater reliability?

Accepted Answer

A) Cohen's kappa 
B) Cronbach's alpha 
C) Kuder-Richardson formula 20 
D) Spearman-Brown formula 
A) Cohen's kappa 
B) Cronbach's alpha 
C) Kuder-Richardson formula 20 
D) Spearman-Brown formula

If a set of scores has a mean of 45 and a standard deviation of 9,then the scores have a variance of

It is possible for a distribution of scores to have more than one

In a distribution with a mean of M = 36 and a standard deviation of SD = 8,a score of 40 would be considered an extreme value.

The data for a correlation are displayed in a graph and show a set of points tightly clustered around a line sloping up to the right.Which of the following is the best estimate for the correlation?

A negative correlation means that as the X values decrease,the Y values also tend to decrease.

The concept of degrees of freedom is associated with

Of the following research statistics,which one is designed to correct for chance agreement between two raters when measuring inter-rater reliability?

Introduction, Acquiring Knowledge, and the Scientific Method

Research Ideas

Defining and Measuring Variables

Ethics in Research

Selecting Research Participants

Research Strategies and Validity

The Experimental Research Strategy

Experimental Designs: Between-Subjects Design

Experimental Designs: Within-Subjects Design

The Nonexperimental and Quasi-Experimental Strategies: Nonequivalent Group, Pre-Post, and Developmental Designs

Factorial Designs

The Correlational Research Strategy

Descriptive Research Strategy

Single-Subject Research Designs

Writing a Research Report

Filters

Exam 15: Statistical Evaluation of Data

If a set of scores has a mean of 45 and a standard deviation of 9,then the scores have a variance of

It is possible for a distribution of scores to have more than one

In a distribution with a mean of M = 36 and a standard deviation of SD = 8,a score of 40 would be considered an extreme value.

The data for a correlation are displayed in a graph and show a set of points tightly clustered around a line sloping up to the right.Which of the following is the best estimate for the correlation?

A negative correlation means that as the X values decrease,the Y values also tend to decrease.

The concept of degrees of freedom is associated with

Of the following research statistics,which one is designed to correct for chance agreement between two raters when measuring inter-rater reliability?

Introduction, Acquiring Knowledge, and the Scientific Method

Research Ideas

Defining and Measuring Variables

Ethics in Research

Selecting Research Participants

Research Strategies and Validity

The Experimental Research Strategy

Experimental Designs: Between-Subjects Design

Experimental Designs: Within-Subjects Design

The Nonexperimental and Quasi-Experimental Strategies: Nonequivalent Group, Pre-Post, and Developmental Designs

Factorial Designs

The Correlational Research Strategy

Descriptive Research Strategy

Single-Subject Research Designs

Writing a Research Report

Filters