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Qualitative Communications Exam 2
Covers ch. 8, 11, 12, 17
34
Communication
Undergraduate 4
12/09/2013

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Cards

Term
In a classical experiment the researcher...
Definition
controls the treatment or manipulation of the independent variable
Term
Treatment groups are...
Definition
are based on theory and reflected on the studies hypothesis
Term
Quasi-experimental research...
Definition
relies on naturally occurring conditions not controlled by the researchers (e.g. sex, student classification, people fired, etc.)
Term
Post test only...
Definition
Answers the question, “Do two groups differ after the stimulus is presented to only one group?”
Term
Pre test-Post test
Definition
Answers the question, “Is the measurement of the dependent variable different at time 2 than at time 1?”
Term
Factorial Design
Definition
Two or more independent variables are tested for the influence on the dependent variable.
Term
A factorial design...
Definition
has two or more independent variables
Term
Which of the following statistical tests is used when you have one independent variable with two levels (or categories) and one dependent variable that is measured on a scale (continuous).
Definition
t-test
Term
The chi-square...
Definition
compares the observed frequency with the expected frequency.
Term
The t-test is:
Definition
restricted to one independent variable with only two levels.
Term
A paired comparison t-test:
Definition
compares two matched scores from the same person.
Term
When a researcher uses an ANOVA, you can assume that:
Definition
the independent variable(s) is/are nominal level data and the dependent variable is continuous level data.
Term
To test for the interaction effect with two discrete independent variables and one continuous dependent variable, the statistic may be:
Definition
two-way or a factorial ANOVA
Term
one-way chi-square
Definition
Test you use when you have only one variable and compare expected probabilities versus observed
Term
T-test
Definition
Test you use when you have one independent variable with two levels and one dependent continuous variable
Term
One-Way ANOVA
Definition
Test you use when you have one independent variable with more than two levels and one dependent continuous variable
Term
Factorial ANOVA
Definition
Test you use when you have two or more independent variables that are discrete and one dependent continuous variable
Term
Two-Way Chi-Square
Definition
Test you use when you have two discrete variables only and no continuous variable, you compare expected versus observed
Term
When you are testing for differences with t-tests or ANOVA, you are comparing...
Definition
means of the dependent variable across groups or categories of the independent variable(s)
Term
An analysis of variance (ANOVA) is based on the idea that for groups or categories to be different, the variability across these groups needs to be ___________ the variability within groups.
Definition
larger than
Term

Given the following hypotheses:

 

H1: Individuals who are single will text less than those involved in a romantic relationship.

H2: Individuals who are younger than 25 years old will text more than individuals who are 25 years or older.

 

The appropriate test to test both hypotheses below the same time is....

 

Definition
a factorial ANOVA
Term
A linear relationship is one in which:
Definition
a one-unit change in one variable is associated with a constant change in the other variable, the constant change can be positive or negative.
Term
A correlation is the statistical test for:
Definition
testing the linear relationship between two continuous level variables.
Term
A correlation coefficient must be interpreted both for its...
Definition
significance and strength
Term
For tests of relationship in communication studies, the significance level (p-value) is usually set at:
Definition
.05 as the criterion for making the decision to accept the research hypothesis.
Term
A correlation coefficient can range from:
Definition
-1.00 to +1.00.
Term
Regression is superior to correlation because it:
Definition

*can test for the relationship of the dependent variable with more than one independent variable.

* can be used with more than two variables.

*can help predict one variable variables by knowing others. 

Term
Multiple regression allows a researcher to test for a significant relationship between:
Definition
a continuous dependent variable and multiple continuous independent variables separately and as a group.
Term
In simple linear regression, which of the following results indicates there is no linear relationship between the dependent and independent variables?
Definition
The R squared is 0.0.
Term
In a simple regression problem, if the coefficient of determination (R2) is 0.6, this means that:
Definition
60% of the variation in the dependent variable can be explained by the variation in the independent variable.
Term
In order to predict speech performance from grades in the formal written outline:
Definition

*there must be a correlation between grade in written formal outline and speech performances

*speech performance is the criterion (dependent) variable

*grade in formal outline is the predictor (independent) variable

Term
In content coding, unit of analysis refers to:
Definition
the standard or uniform unit that allows comparisons among categories.
Term
In content analysis, manifest content is the:
Definition
description of the characteristics of the content itself.
Term
In a simple regression problem, if the coefficient of determination (R2) is 0.95, this means that:
Definition
95% of the variation in the dependent variable can be explained by the variation in the independent variable.
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