Question 1

The most appropriate indicator of the importance of a relationship between two categorical variables is:

Accepted Answer

A)  the crossbreak table 
B)  Chi-Square 
C)  a comparison of actual and expected frequencies 
D)  the contingency coefficient 
A)  the crossbreak table 
B)  Chi-Square 
C)  a comparison of actual and expected frequencies 
D)  the contingency coefficient

Question 2

A researcher discussing the information in item 19 could be criticized for:

Accepted Answer

A)  making too much of a trivial relationship 
B)  incorrect use of inferential statistics 
C)  an error in computation 
D)  all of the above 
A)  making too much of a trivial relationship 
B)  incorrect use of inferential statistics 
C)  an error in computation 
D)  all of the above

Question 3

A correlation coefficient of r = .05 can be interpreted as having both practical and statistical significance.

Accepted Answer

A) True 
 B)False

Question 4

Matching
-Categorical variable

Accepted Answer

A)  delta 
B)  Pearson r 
C)  eta. 
D)  IQ scores 
E)  gender 
A)  delta 
B)  Pearson r 
C)  eta. 
D)  IQ scores 
E)  gender

Question 5

The first step in analyzing data in a comparison group study is to:

Accepted Answer

A)  calculate averages 
B)  construct frequency polygons 
C)  calculate measures of variability 
D)  determine statistical significance 
A)  calculate averages 
B)  construct frequency polygons 
C)  calculate measures of variability 
D)  determine statistical significance

Question 6

Scatterplots provide information on which correlation coefficient to calculate.

Accepted Answer

A) True 
 B)False

Question 7

Matching
-Curvilinear relationship

Accepted Answer

A)  delta 
B)  Pearson r 
C)  eta. 
D)  IQ scores 
E)  gender 
A)  delta 
B)  Pearson r 
C)  eta. 
D)  IQ scores 
E)  gender

Question 8

In a study in which all subjects receive both treatments, the appropriate descriptive statistic to use is:

Accepted Answer

A)  the Pearson correlation coefficient 
B)  the mean 
C)  the contingency coefficient 
D)  Chi-Square 
A)  the Pearson correlation coefficient 
B)  the mean 
C)  the contingency coefficient 
D)  Chi-Square

Question 9

It is generally recommended that an effect size (E.S.) be of what magnitude before concluding that a difference in means is important?

Accepted Answer

A)  .25 
B)  .50 
C)  1.00 
D)  2.00 
A)  .25 
B)  .50 
C)  1.00 
D)  2.00

Question 10

Calculation of Pearson r is most justified when the points on a scatterplot:

Accepted Answer

A)  approximate a triangular shape 
B)  contain a few points that do not fit the overall pattern 
C)  fall into two distinct groups 
D)  cluster around a diagonal line 
A)  approximate a triangular shape 
B)  contain a few points that do not fit the overall pattern 
C)  fall into two distinct groups 
D)  cluster around a diagonal line

The most appropriate indicator of the importance of a relationship between two categorical variables is:

A researcher discussing the information in item 19 could be criticized for:

A correlation coefficient of r = .05 can be interpreted as having both practical and statistical significance.

Matching -Categorical variable

The first step in analyzing data in a comparison group study is to:

Scatterplots provide information on which correlation coefficient to calculate.

Matching -Curvilinear relationship

In a study in which all subjects receive both treatments, the appropriate descriptive statistic to use is:

It is generally recommended that an effect size (E.S.) be of what magnitude before concluding that a difference in means is important?

Calculation of Pearson r is most justified when the points on a scatterplot:

The Nature of Research

The Research Problem

Locating and Reviewing the Literature

Ethics and Research

Variables and Hypotheses

Sampling

Instrumentation

Validity and Reliability

Internal Validity

Descriptive Statistics

Inferential Statistics

Experimental Research

Single-Subject Research

Correlational Research

Causal-Comparative Research

Survey Research

The Nature of Qualitative Research

Observation and Interviewing

Content Analysis

Ethnographic Research

Historical Research

Mixed-Methods Research

Action Research

Preparing Research Proposals and Reports

Filters

Exam 12: Statistics in Perspective

The most appropriate indicator of the importance of a relationship between two categorical variables is:

A researcher discussing the information in item 19 could be criticized for:

A correlation coefficient of r = .05 can be interpreted as having both practical and statistical significance.

Matching -Categorical variable

The first step in analyzing data in a comparison group study is to:

Scatterplots provide information on which correlation coefficient to calculate.

Matching -Curvilinear relationship

In a study in which all subjects receive both treatments, the appropriate descriptive statistic to use is:

It is generally recommended that an effect size (E.S.) be of what magnitude before concluding that a difference in means is important?

Calculation of Pearson r is most justified when the points on a scatterplot:

The Nature of Research

The Research Problem

Locating and Reviewing the Literature

Ethics and Research

Variables and Hypotheses

Sampling

Instrumentation

Validity and Reliability

Internal Validity

Descriptive Statistics

Inferential Statistics

Experimental Research

Single-Subject Research

Correlational Research

Causal-Comparative Research

Survey Research

The Nature of Qualitative Research

Observation and Interviewing

Content Analysis

Ethnographic Research

Historical Research

Mixed-Methods Research

Action Research

Preparing Research Proposals and Reports

Filters