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Author Question: In a randomized subjects pretest-posttest control group design, results might best be analyzed ... (Read 77 times)

tuffie

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on: Jun 20, 2018
In a randomized subjects pretest-posttest control group design, results might best be analyzed through
 
  a. ANCOVA. c. change scores.
  b. ANOVA. d. t tests.

Question 2

A particular aptitude test shows a moderate correlation with college GPA. Some argue that many students who would not have succeeded in college anyway choose not to take the test or attempt college work, thus resulting in a form of self-preselection. What would be the effect on the validity index of the aptitude test if every high school senior took the test and attempted one year of college?
 
  a. Validity would increase. c. No effect on validity.
  b. Validity would decrease. d. Impossible to predict.


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juicepod

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Reply #1 on: Jun 20, 2018
Answer to Question 1

A

Answer to Question 2

A


tuffie

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Reply 2 on: Jun 20, 2018
Great answer, keep it coming :)

atrochim

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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