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 29 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
Great answer, keep it coming :)

tuate

  • Member
  • Posts: 332
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

Less than one of every three adults with high LDL cholesterol has the condition under control. Only 48.1% with the condition are being treated for it.

Did you know?

A cataract is a clouding of the eyes' natural lens. As we age, some clouding of the lens may occur. The first sign of a cataract is usually blurry vision. Although glasses and other visual aids may at first help a person with cataracts, surgery may become inevitable. Cataract surgery is very successful in restoring vision, and it is the most frequently performed surgery in the United States.

Did you know?

No drugs are available to relieve parathyroid disease. Parathyroid disease is caused by a parathyroid tumor, and it needs to be removed by surgery.

Did you know?

Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.

Did you know?

Malaria mortality rates are falling. Increased malaria prevention and control measures have greatly improved these rates. Since 2000, malaria mortality rates have fallen globally by 60% among all age groups, and by 65% among children under age 5.

(a) With few ticks, moose retain a brown coat; (b) at high numbers of ticks, moose self-groom, destr (a) With few ticks, moose retain a brown coat; (b) at high numbers of ticks, moose self-groom, destr
A downward-sloping spark line usually indicates high secondary ignition system resistance or an ... A downward-sloping spark line usually indicates high secondary ignition system resistance or an ...
The pH scale is logarithmic. A low pH indicates acidic conditions, whereas a high pH indicates ... The pH scale is logarithmic. A low pH indicates acidic conditions, whereas a high pH indicates ...
Correlations between scores on a psychology test and number of boiled kumquats eaten per month Correlations between scores on a psychology test and number of boiled kumquats eaten per month
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 ...
High in the Andes, a scientist measures the stride of a carnivorous dinosaur High in the Andes, a scientist measures the stride of a carnivorous dinosaur
Video: Causes of Angina

For a complete list of videos, visit our video library