Author Question: When specific comparisons have not been planned ahead of time, increases in experimentwise alpha ... (Read 127 times)

kaid0807

  • Hero Member
  • *****
  • Posts: 515
When specific comparisons have not been planned ahead of time, increases in experimentwise alpha that occur when many comparisons are made can be reduced by using which of the following?
 
  a. Pairwise comparisons
  b. Post hoc comparisons
  c. Planned comparisons
  d. Increases in experimentwise alpha cannot be reduced after the experiment has been run.

Question 2

A priori comparisons, comparing only means for which specific differences are predicted by the research hypothesis, are also called
 
  a. post hoc comparisons.
  b. complex comparisons.
  c. planned comparisons.
  d. pairwise comparisons.



owenfalvey

  • Sr. Member
  • ****
  • Posts: 337
Answer to Question 1

b

Answer to Question 2

c



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

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.

Did you know?

More than 50% of American adults have oral herpes, which is commonly known as "cold sores" or "fever blisters." The herpes virus can be active on the skin surface without showing any signs or causing any symptoms.

Did you know?

Cocaine was isolated in 1860 and first used as a local anesthetic in 1884. Its first clinical use was by Sigmund Freud to wean a patient from morphine addiction. The fictional character Sherlock Holmes was supposed to be addicted to cocaine by injection.

Did you know?

Never take aspirin without food because it is likely to irritate your stomach. Never give aspirin to children under age 12. Overdoses of aspirin have the potential to cause deafness.

Did you know?

There can actually be a 25-hour time difference between certain locations in the world. The International Date Line passes between the islands of Samoa and American Samoa. It is not a straight line, but "zig-zags" around various island chains. Therefore, Samoa and nearby islands have one date, while American Samoa and nearby islands are one day behind. Daylight saving time is used in some islands, but not in others—further shifting the hours out of sync with natural time.

For a complete list of videos, visit our video library