Applied Statistics II: Multivariable and Multivariate Techniques. 3rd Edition
by Rebecca M. Warner
(All Chaptersz, Latest Edition, Verified Answers)
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,Chapter 1: The New Statistics
Multiple Choice
1. A variable that is statistically controlled in an analysis is a(n) .
a. an independent variable
b. a dependent variable
c. a covariate
d. a manipulated variable
Answer: C
Cognitive Domain: Knowledge
Answer Location: 1.1: Required Background Difficulty Level: Easy
2. In past years, many investigators have failed to report .
a. the effect size
b. the sample sizes
c. descriptive statistics
d. obtained p values Answer: A
Cognitive Domain: Knowledge
Answer Location: 1.2: What is the “New Statistics”? Difficulty Level: Easy
3. A primary concern of investigators has been, and often still is, obtaining a p value of
.
a. .10
b. .05
c. .01
d. .000
Answer: B
Cognitive Domain: Knowledge
Answer Location: 1.2: What Is the “New Statistics”? Difficulty Level: Easy
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,4. A major change advocated by New Statistics is .
a. reduced emphasis on effect size
b. focus on the results of single studies
c. not reporting confidence intervals
d. understanding the limitations of significance tests Answer: D
Cognitive Domain: Knowledge
Answer Location: 1.2: What is the “New Statistics”? Difficulty Level: Easy
5. A primary change proposed by advocates of New Statistics involves summarizing effect
sizes from a number of studies using .
a. Bayesian statistics
b. meta-analysis
c. multivariate analysis
d. descriptive statistics Answer: B
Cognitive Domain: Knowledge
Answer Location: 1.2: What Is the “New Statistics”? Difficulty Level: Easy
6. An emphasis of New Statistics is .
a. using increasingly precise p values
b. developing new methods of statistical analysis
c. reducing emphasis on confidence interval interpretation
d. adopting a more critical perspective when considering significance Answer: D
Cognitive Domain: Knowledge
Answer Location: 1.2: What Is the “New Statistics”? Difficulty Level: Easy
7. Which of the following types of information is provided to investigators by NHST?
a. whether the hypothesis of the study has been proven
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, b. the probability that the research hypothesis is true
c. the probability of obtaining results about the H0 based on one sample
d. the exact probability of obtaining the same results on replication Answer: C
Cognitive Domain: Analysis
Answer Location: 1.3: Common Misinterpretations of p Values Difficulty Level: Hard
8. When reading an article that reports the results of multiple statistical tests, readers should
remember that multiple tests .
a. provide inaccurate information about the risks of Type I errors
b. provide inaccurate information about the risks of Type II errors
c. enhance understanding of cause and effect relationships
d. provide reliable information about the size and importance of effects Answer: A
Cognitive Domain: Application
Answer Location: 1.3: Common Misinterpretations of p Values Difficulty Level: Medium
9. An advocate of New Statistics would object to a research report that included a statement
like the .
a. results of our study are consistent with a recent meta-analysis
b. significant results should be interpreted cautiously due to the large sample size
c. results of our study approached statistical significance
d. results of our study provide support for our initial hypothesis Answer: C
Cognitive Domain: Application
Answer Location: 1.3: Common Misinterpretations of p Values Difficulty Level: Medium
10. If a statistical analysis yields p = .03, a research report can include a statement like
.
a. the results of our study are likely to be replicated
b. the evidence is consistent with the hypothesis of our study
c. there is a 97% chance that the null hypothesis of our study is false
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