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Author Question: In a randomized subjects pretest-posttest control group design, results might best be analyzed ... (Read 146 times)

tuffie

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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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Answer to Question 1

A

Answer to Question 2

A




tuffie

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Reply 2 on: Jun 20, 2018
Thanks for the timely response, appreciate it


elyse44

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Reply 3 on: Yesterday
Wow, this really help

 

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