# Exam 3 Review

60 Questions | Total Attempts: 34

Settings

• 1.
An ____________________ is a hypothesis-testing procedure that is used to evaluate mean differences between two or more treatments (or populations).
• 2.
An ____________________ uses sample data to make inferences about three or more treatments (or populations).
• 3.
When sample means are widely dispersed, the mean distribution has  ____________________ variance.
• A.

High

• B.

Low

• C.

Medium

• 4.
When sample means are closely condensed, the mean distribution has ____________________ variance.
• A.

High

• B.

Low

• C.

Medium

• 5.
A ____________________ is used when you have one independent variable (i.e. psychological treatment) with more than two levels (i.e. control, medication, and therapy) and one dependent variable (i.e. overall psychological health).
• 6.
____________________: the total probability of a Type I error that is accumulated from all of the individual tests in an experiment.
• 7.
Every time you add a test to an experiment, you ____________________ the risk of Type I error.
• A.

Increase

• B.

Decrease

• C.

Don't affect

• 8.
The ANOVA performs all three comparisons simultaneously in one hypothesis test, ____________________ the risk experimentwise error.
• A.

Eliminating

• B.

Increasing

• C.

Not affecting

• 9.
____________________ variance: how much of the variability in the scores results from general differences between treatment conditions.
• 10.
What factors affect between treatment variance in a one-way ANOVA?
• A.

Treatment effect

• B.

Individual differences

• C.

Experimental error

• 11.
____________________ variance: how much of the variability in the scores results from variability within each sample.
• 12.
What factors affect within treatment variance in a one-way ANOVA?
• A.

Treatment affect

• B.

Individual differences

• C.

Experimental error

• 13.
____________________: variability due to intrinsic differences between participants (i.e. age, gender, etc.)
• 14.
____________________: variability due to imperfect experimental conditions or measurements.
• 15.
When we measure between group variability, we attempt to be left only with variability due to ____________________.
• A.

Individual differences

• B.

Treatment effect

• C.

Experimental error

• 16.
The ____________________ for a one-way ANOVA says all three (or more) populations are equal.
• 17.
H0: M1 = M2 = M3 is the _________________________ for a one-way ANOVA.
• 18.
The numerator and the denominator are measuring the same variance when F = _________________________.
• A.

1.00

• B.

2.00

• C.

3.00

• D.

0

• 19.
When do you follow up with a post-hoc test?
• A.

When you reject the null hypothesis

• B.

When you fail to reject the null hypothesis

• C.

When you either reject the null hypothesis or fail to reject the null hypothesis

• 20.
The _________________________ for a one-way ANOVA says at least one population mean is different from the others.
• 21.
There is no statistical way to write the _________________________ hypothesis.
• A.

Null

• B.

Alternative

• 22.
F-ratios are clustered near 1.00 when there is a _________________________ df.
• A.

Large

• B.

Small

• 23.
The F distribution is more spread out when there is a _________________________ df.
• A.

Small

• B.

Large

• 24.
The _________________________ measures the treatment effect (to obtain this value, you cross out what is common in the numerator, between treatments, and the denominator, within treatments).
• 25.
Between treatment variance is the _________________________ in the one-way ANOVA.
• A.

Numerator

• B.

Denominator

Related Topics