Answered: The effect size to use for a main…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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The effect size to use for a main effect in a factorial ANOVA would be:

A. Cohen's D Squared

B. Partial Eta Squared

C. Cohen's D

D. Eta Squared

A researcher conducts an experiment on the effects of caffeine on memory. They hypothesise that caffeine may only be effective for studying if a person also has caffeine during the later testing of memory (say in an exam). There are two IV's: caffeine use during study (yes/no) and during testing (yes/no).

If there was a significant result, what would be the best way for the researcher to examine this further:

A. Simple effects analyses

B. Homogeneity of Variances

C. Using z-scores

D. The ANOVA gives you all of the relevant information that you need

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