Practice Quiz

EPPP Psychology

Category - Research Methods and Statistics

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Choosing the most appropriate statistical test depends on what type of question the research is addressing and what type of data is collected. ANOVAs and MANOVAs are both useful in analyzing interval and ratio data. Using multiple ANOVAs instead of one MANOVA where there is more than one dependent variable has what effect on results?
  1. Increases the likelihood of a type I error
  2. Increases the likelihood of a type II error
  3. Decreases the likelihood of a type I error
  4. Decreases the likelihood of a type II error
Explanation
Answer: A - Running an ANOVA on each dependent variable, instead of one MANOVA on all data, increases the probability of a type I error (that is, of mistakenly rejecting the null hypothesis).
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