« previous next »

Author Question: A researcher found a correlation of .40 between aptitude test scores and school achievement. What ... (Read 177 times)

humphriesbr@me.com

  • Hero Member
  • *****
  • Posts: 550
on: Jun 20, 2018
A researcher found a correlation of .40 between aptitude test scores and school achievement. What proportion of the variance in school achievement can be attributed to variables other than aptitude?
 
  a. .16 c. .60
  b. .40 d. .84

Question 2

How does replication of experiments contribute to external validity?
 
  What will be an ideal response?


InfiniteSteez

  • Sr. Member
  • ****
  • Posts: 340
Reply #1 on: Jun 20, 2018
Answer to Question 1

D

Answer to Question 2

If experiments are repeated and the outcome is the same, one has more confidence in generalizing the findings to other subjects and settings.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.

Did you know?

Looking at the sun may not only cause headache and distort your vision temporarily, but it can also cause permanent eye damage. Any exposure to sunlight adds to the cumulative effects of ultraviolet (UV) radiation on your eyes. UV exposure has been linked to eye disorders such as macular degeneration, solar retinitis, and corneal dystrophies.

Did you know?

Patients should never assume they are being given the appropriate drugs. They should make sure they know which drugs are being prescribed, and always double-check that the drugs received match the prescription.

Did you know?

The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.

Did you know?

Multiple sclerosis is a condition wherein the body's nervous system is weakened by an autoimmune reaction that attacks the myelin sheaths of neurons.

GEN. BIO. TEST HELP [EMERGENCY] GEN. BIO. TEST HELP [EMERGENCY]
Pregnancy test Pregnancy test
Correctly administering and interpreting an intelligence test is a skill that takes many years for ... Correctly administering and interpreting an intelligence test is a skill that takes many years for ...
An embedded particle of something was found on one of the gears, making this pump worthless except ... An embedded particle of something was found on one of the gears, making this pump worthless except ...
Examples of the Types of Cards Used in a Test of Inductive Reasoning Examples of the Types of Cards Used in a Test of Inductive Reasoning
Probiotics are live microorganisms, usually bacteria, mainly found in cultured dairy foods Probiotics are live microorganisms, usually bacteria, mainly found in cultured dairy foods
Video: Cellular Defects - Osteoblasts, Osteoclasts and Osteocytes

For a complete list of videos, visit our video library