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 28 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
Wow, this really help

alexanderhamilton

  • Member
  • Posts: 334
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).

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?

Carbamazepine can interfere with the results of home pregnancy tests. If you are taking carbamazepine, do not try to test for pregnancy at home.

Did you know?

The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").

Did you know?

Signs of depression include feeling sad most of the time for 2 weeks or longer; loss of interest in things normally enjoyed; lack of energy; sleep and appetite disturbances; weight changes; feelings of hopelessness, helplessness, or worthlessness; an inability to make decisions; and thoughts of death and suicide.

Pocket gophers and ecosystem structure (data from Huntly and Inouye 1988). Pocket gophers and ecosystem structure (data from Huntly and Inouye 1988).
Glioma. (a) Illustration of a large glioma (colored area) within the left cerebral hemisphere in a s Glioma. (a) Illustration of a large glioma (colored area) within the left cerebral hemisphere in a s
High rates of rural poverty have been a part of the United States from its origin to the present. ... High rates of rural poverty have been a part of the United States from its origin to the present. ...
Foods High in Tyramine Foods High in Tyramine
Histopathologic findings in Crohn's disease. A high magnification micrograph of a colonic ... Histopathologic findings in Crohn's disease. A high magnification micrograph of a colonic ...
People using walkers typically have a high level of mobility impairment. People using walkers typically have a high level of mobility impairment.
Video: Depolarization of the SA node, Action potentials of the myocardium & ANS effects

For a complete list of videos, visit our video library