This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: In a randomized subjects pretest-posttest control group design, results might best be analyzed ... (Read 97 times)

tuffie

  • Hero Member
  • *****
  • Posts: 534
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.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

juicepod

  • Sr. Member
  • ****
  • Posts: 310
Reply #1 on: Jun 20, 2018
Answer to Question 1

A

Answer to Question 2

A


tuffie

  • Member
  • Posts: 534
Reply 2 on: Jun 20, 2018
Wow, this really help

bblaney

  • Member
  • Posts: 323
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.

Did you know?

Congestive heart failure is a serious disorder that carries a reduced life expectancy. Heart failure is usually a chronic illness, and it may worsen with infection or other physical stressors.

Did you know?

All adverse reactions are commonly charted in red ink in the patient's record and usually are noted on the front of the chart. Failure to follow correct documentation procedures may result in malpractice lawsuits.

Did you know?

This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.

Did you know?

Although the Roman numeral for the number 4 has always been taught to have been "IV," according to historians, the ancient Romans probably used "IIII" most of the time. This is partially backed up by the fact that early grandfather clocks displayed IIII for the number 4 instead of IV. Early clockmakers apparently thought that the IIII balanced out the VIII (used for the number 8) on the clock face and that it just looked better.

A Recently Discovered Member of the Local Group A Recently Discovered Member of the Local Group
Curative Factors of Group Therapy Curative Factors of Group Therapy
The bypass actuator opens the bypass valve to control boost pressure. The bypass actuator opens the bypass valve to control boost pressure.
Nuts are also a good source of B group vitamins (including folate), and vitamin E Nuts are also a good source of B group vitamins (including folate), and vitamin E
10 side effect of birth control pills 10 side effect of birth control pills
phylogenetic results using the TCF7L2 transcripting mRNA sequence for the 4 listed taxa phylogenetic results using the TCF7L2 transcripting mRNA sequence for the 4 listed taxa
Video: Types of disease resistance: innate defenses & immunity

For a complete list of videos, visit our video library