« previous next »

Author Question: Regression to the mean implies that if extreme scores are obtained for some individuals and then the ... (Read 101 times)

vicky

  • Hero Member
  • *****
  • Posts: 586
on: Jun 19, 2018
Regression to the mean implies that if extreme scores are obtained for some individuals and then the observations are repeated, the second scores obtained for these same individuals will be
 
  a. closer to the mean of the first scores of the entire group.
  b. more extreme than the first scores of the entire group.
  c. exactly the same as before.
  d. unreliable.

Question 2

Explain why manipulation of an independent variable is a necessary component of an experiment.
 
  What will be an ideal response?


rekilledagain

  • Sr. Member
  • ****
  • Posts: 337
Reply #1 on: Jun 19, 2018
Answer to Question 1

A

Answer to Question 2

In an experiment, manipulation of the independent variable is necessary to avoid the directionality problem and to establish the direction of the relationship. The intent is to demonstrate that the manipulation of one variable (the independent variable) causes changes to occur in a second variable (the dependent variable).


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

You should not take more than 1,000 mg of vitamin E per day. Doses above this amount increase the risk of bleeding problems that can lead to a stroke.

Did you know?

In Eastern Europe and Russia, interferon is administered intranasally in varied doses for the common cold and influenza. It is claimed that this treatment can lower the risk of infection by as much as 60–70%.

Did you know?

The use of salicylates dates back 2,500 years to Hippocrates's recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.

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.

Did you know?

Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.

Part of the physical map of the E. coli genome, obtained by sequencing Part of the physical map of the E. coli genome, obtained by sequencing
Researchers must inform potential participants of a study's procedures so that consent may be o Researchers must inform potential participants of a study's procedures so that consent may be o
Contact theory indicates that prejudice decreases and relations improve when individuals of ... Contact theory indicates that prejudice decreases and relations improve when individuals of ...
A Scatterplot of the Test Scores and Average Grades of 10 Students A Scatterplot of the Test Scores and Average Grades of 10 Students
. In which distribution is the mean more “typical” of all scores? . In which distribution is the mean more “typical” of all scores?
The karyotypes of individuals The karyotypes of individuals
Video: Summary of glucose catabolism

For a complete list of videos, visit our video library