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

Author Question: Why does Cohen (1988) say that correlations between two variables of .5 are about as high as they ... (Read 12 times)

james0929

  • Hero Member
  • *****
  • Posts: 586
on: Jun 20, 2018
Why does Cohen (1988) say that correlations between two variables of .5 are about as high as they
 
  What will be an ideal response?

Question 2

Why is a Pearson's r of .6 more than twice as useful as a Pearson's r of .3?
 
  What will be an ideal response?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Kingjoffery

  • Sr. Member
  • ****
  • Posts: 332
Reply #1 on: Jun 20, 2018
Answer to Question 1

Few variables ever show perfect correlation, especially in correlating human characteristics. Most will not be above the moderate range.

Answer to Question 2

The coefficient of determination for r = .6 shows that the variables have 36 percent of their variance in common; when r = .3, the variables have 9 percent of their variance in common. The r=.6 would be more useful for prediction.


james0929

  • Member
  • Posts: 586
Reply 2 on: Jun 20, 2018
:D TYSM

jackie

  • Member
  • Posts: 324
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

Drug abusers experience the following scenario: The pleasure given by their drug (or drugs) of choice is so strong that it is difficult to eradicate even after years of staying away from the substances involved. Certain triggers may cause a drug abuser to relapse. Research shows that long-term drug abuse results in significant changes in brain function that persist long after an individual stops using drugs. It is most important to realize that the same is true of not just illegal substances but alcohol and tobacco as well.

Did you know?

Amphetamine poisoning can cause intravascular coagulation, circulatory collapse, rhabdomyolysis, ischemic colitis, acute psychosis, hyperthermia, respiratory distress syndrome, and pericarditis.

Did you know?

The tallest man ever known was Robert Wadlow, an American, who reached the height of 8 feet 11 inches. He died at age 26 years from an infection caused by the immense weight of his body (491 pounds) and the stress on his leg bones and muscles.

Did you know?

Blood is approximately twice as thick as water because of the cells and other components found in it.

Did you know?

When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.

Spectrum of a High-Redshift Quasar Spectrum of a High-Redshift Quasar
Correlations are Depicted in Scatterplots Correlations are Depicted in Scatterplots
A gasoline direct-injection system injects fuel under high pressure directly into the combustion ... A gasoline direct-injection system injects fuel under high pressure directly into the combustion ...
Effect of dietary fats on high- and low-density cholesterol levels Effect of dietary fats on high- and low-density cholesterol levels
A 60-kg skier starts from rest from the top of a 50-m high slope. If the work done by friction ... A 60-kg skier starts from rest from the top of a 50-m high slope. If the work done by friction ...
How high a hill would a 75-kg hiker have to climb to increase her gravitational potential ... How high a hill would a 75-kg hiker have to climb to increase her gravitational potential ...
Video: Sister chromatids of a metaphase chromosome animation

For a complete list of videos, visit our video library