12. A professor computes the mean difference in exam scores before and after a lecture as...
12. A professor computes the mean difference in exam scores before and after a lecture as 9.0 ± 14.5 (MD ± SD), and this difference was significant. What is the effect size for this result using estimated Cohen's d? A) d=0.62 (medium effect) B) d=1.61 (medium effect) C) d=0.62 (large effect) D) d=1.61 (large effect) E) d=0.62 (large effect)
Homework Answers
since we know that Cohen's D =MD/SD =9/14.5=0.62
option A is correct
A) d=0.62 (medium effect)
(since it is between 0.50 and 0.80)
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12. A professor computes the mean difference in exam scores
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A professor notes that many of her students take notes on their
laptops, while others take notes using paper. She wonders if using
a laptop is as effective as handwriting notes because typing allows
students to take notes much faster. Although this increased speed
does allow for more information to be written, it also does not
require as much processing of the information. While taking notes
by hand, students must process the information and decide what is
important. To test...
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