RM FINAL EXAM REVIEW 3
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To fully assess the importance and impact of the results, we must also have information about the overlap of distributions.
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A study reports finding a "significant" difference between group means. What should we conclude about this report?
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less two distributions overlap
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The larger the effect size, the:
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Standard Deviation
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Cohen's d measure effect size in term of:
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Type II; decreased
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By increasing statistical power, the probability of making a _____ error is ______.
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Using effect sizes, which are not affected by sample size, rather than test statistics, which are influenced by sample size, provides a fair comparison.
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Why are effect sizes rather than test statistics used when comparing study results?
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Large
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A cohen's D of -.85 is what type of effect size?
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R^2: the amount of variance in the DV explained by the IV
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Which of the following represents the measure of effect size that is used for a one-way ANOVA and its interpretation?
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s
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Which of the following symbols represents the standard deviation of a sample?
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1. Sample size 2. Standard deviation 3. Change the significance level (from .05 to .06) 4. Having a one tailed test vs a two tailed test. 5. increasing or decreasing alpha
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There are five factors that impact power. What are they?
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What results are significant, but it does not indicate anything about the importance of the significance.
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Hypothesis testing tells us:
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increases the likelihood that we will reject the null hypothesis.
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Increasing sample size:
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Creative contribution
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Concerning "authorship" in psychological research, the order of authors is predominantly a function of:
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are unaffected by sample size.
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Measure of effect size:
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standardized difference between the group means.
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Cohen's D is the
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Effect size through variance: variability in scores.
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What does R^2 measure?
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Duplicate publication
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The act of publishing the same data and results in more than one journal or publications refers to which of the following professional issues:
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Older participants is approximately half a standard deviation below that of younger participants.
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Imagine that a study of memory and aging finds that younger participants correctly recall 55% of studied words, older participants correctly recall 42% of studied words, and the size of this effect is Cohen's d = .49. This effect size indicates that the memory performance of:
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Power analysis; tells the researcher the number of participants needed for trustworthy results.
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Before hypothesis testing and at the beginning of a study, a researcher is advised to conduct a(n) ____ because it _____.
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Fabricating data
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In class, we discussed the case of Diederick Stapel, the Dutch social psychologist who faked data regarding behavior in littered vs. Clean environment which ultimately resulted in the retraction of at least 55 publications. The best way to describe his scientific misconduct is:
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Title, author, author's note/byline
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Which of the following appear on the APA style title page?
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Centered, bold
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Major headings, such as "results" and "Discussion" are usually ____ in the manuscript.
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second
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The abstract of a copy manuscript is usually on the _____ page.
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Histogram (frequency table)
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What type of figure is most appropriate when examining only one variable?
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Abstract, Intro, Method, Results, Discussion, References
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Which of the following is the appropriate order of sections in an APA style manuscript?
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a year or more.
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The typical acceptable manuscript gets published as a journal article ____ after it has been written and submitted after about...
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Scatterplot
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Which of the following would be the best way to display data about the relationship between length of the study time and test scores?
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be more interactive and intimate
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One of the major advantages of a poster presentation relative to an oral presentation is that posters tend to:
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Increase N
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Arguably the easiest way to increase statistical power, and the most common approach, is to:
