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 122 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
:D TYSM

DylanD1323

  • Member
  • Posts: 314
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

Medications that are definitely not safe to take when breastfeeding include radioactive drugs, antimetabolites, some cancer (chemotherapy) agents, bromocriptine, ergotamine, methotrexate, and cyclosporine.

Did you know?

In 2006, a generic antinausea drug named ondansetron was approved. It is used to stop nausea and vomiting associated with surgery, chemotherapy, and radiation therapy.

Did you know?

Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.

Did you know?

The FDA recognizes 118 routes of administration.

Did you know?

There are immediate benefits of chiropractic adjustments that are visible via magnetic resonance imaging (MRI). It shows that spinal manipulation therapy is effective in decreasing pain and increasing the gaps between the vertebrae, reducing pressure that leads to pain.

Distribution of bonding and outer nonbonding electrons in the peptide group Distribution of bonding and outer nonbonding electrons in the peptide group
Negative feedback control of a regulated variable. Negative feedback control of a regulated variable.
A group therapy session. A group therapy session.
Reduction of the carbonyl group on a sugar Reduction of the carbonyl group on a sugar
Control of glycogen synthase activity Control of glycogen synthase activity
BLAST results showing a 280-base sequence of a chromosome 12 contig from rats BLAST results showing a 280-base sequence of a chromosome 12 contig from rats
Video: Inflammatory response Animation

For a complete list of videos, visit our video library