An experiment consists of three groups (Treatment Group 1,
Treatment Group 2, Placebo Group). What test...
An experiment consists of three groups (Treatment Group 1,
Treatment Group 2, Placebo Group). What test was MOST likely
used?
Repeated Measures T-test
Z-test
Single Sample T-test
ANOVA
The population mean difference for a T-test of Independent
Samples is ALWAYS
0
1
equal to the population mean minus the sample mean
can't answer/not enough information
A research study reported a LARGE effect size of .8. What effect
size formula was used?
Scheffe
Cohen's D
Tukey
Correlation
.10
.001
.05
.5
HW 6: z-test, t-test for independent samples, t-test for related
samples, 1-way ANOVA
Researchers wanted to...
HW 6: z-test, t-test for independent samples, t-test for related
samples, 1-way ANOVA
Researchers wanted to explore different treatment methods to
effect memory skills in high school freshmen. Subjects were given a
memory test (under multiple conditions) these were the results:
Group 1
10, 8, 9, 11,
8, 9, 7, 6,
9, 8
Group 2
12, 10,
11, 9, 13, 8, 9, 12, 11, 11
Group 3
10, 9, 10, 9, 11,
8, 7, 9, 10, 11...
Is there any difference between a Factorial ANOVA and a One-Way
ANOVA?
Yes, a Factorial ANOVA...
Is there any difference between a Factorial ANOVA and a One-Way
ANOVA?
Yes, a Factorial ANOVA has 2+ IVs, whereas a One-Way ANOVA has
only 1 IV.
Yes, the main purpose of a Factorial ANOVA is to test if two or
more groups are significantly different from each other, whereas a
One-Way ANOVA compares means across two or more independent
variables.
No, both tests are the same.
Yes, Factorial ANOVA results in the calculation of three F
ratios, whereas two...
For each of the following studies determine which t-test is the
appropriate analysis (one sample, repeated...
For each of the following studies determine which t-test is the
appropriate analysis (one sample, repeated measures, independent
samples).
A researcher is examining whether a cognitive behavioral
therapy has an effect on levels of anxiety. She records the level
of anxiety in a group of patients prior to therapy, and again after
the 8-week therapy.
A professor is interested in seeing whether or not his class is
more neurotic than an estimated population mean. He records his
class’s neuroticism score...
discuss the differences between a one-sample z-test, one-sample
t-test, the independent samples t-test and the dependent...
discuss the differences between a one-sample z-test, one-sample
t-test, the independent samples t-test and the dependent samples
t-test. Specifically, under what circumstances would you conduct
each test and what type of information comes from a known/defined
population versus your sample data?
Q1. Why would you perform a one-way ANOVA over
a t-test? Is the answer, when the...
Q1. Why would you perform a one-way ANOVA over
a t-test? Is the answer, when the population means of only two
groups is to be compared, a t-test is used, but
when means of more than two groups are to be compared,
ANOVA is preferred (Y/N)
Q2. A rag-tag group of bandits crash the party
to steal candy. In a frenzy, you carefully record the numbers of
different candies that group grabbed. You arrange
the data in a table, below:...
For each hypothesis, the specific statistical test appropriate
for testing the hypothesis should be described and...
For each hypothesis, the specific statistical test appropriate
for testing the hypothesis should be described and a brief
description of why the chosen test is most appropriate should be
included.
One Sample t-test, Two sample t-test, Two related
(correlated/paired/dependent)sample t-test, One Factor (one way)
analysis of variance (ANOVA), Factorial for two way/facot Analysis
of Variance (Anova), One Variable Chi-Square test, two variable chi
square test, correlation, or linear regression
Example:
1. People who work in a sedentary job are more...