Author Question: A sample made up of volunteers may be biased because a. the control group and the experimental ... (Read 74 times)

bucstennis@aim.com

  • Hero Member
  • *****
  • Posts: 532
A sample made up of volunteers may be biased because
 
  a. the control group and the experimental group can never be equated
  b. it is not economical
  c. they may not be representative of the total population
  d. none of the above

Question 2

The median is always:
 
  a. an actual score
  b. at the 50th percentile
  c. larger than the mean
  d. the same as the arithmetic average



kthug

  • Sr. Member
  • ****
  • Posts: 332
Answer to Question 1

C

Answer to Question 2

B



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

Famous people who died from poisoning or drug overdose include, Adolf Hitler, Socrates, Juan Ponce de Leon, Marilyn Monroe, Judy Garland, and John Belushi.

Did you know?

Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.

Did you know?

Chronic necrotizing aspergillosis has a slowly progressive process that, unlike invasive aspergillosis, does not spread to other organ systems or the blood vessels. It most often affects middle-aged and elderly individuals, spreading to surrounding tissue in the lungs. The disease often does not respond to conventionally successful treatments, and requires individualized therapies in order to keep it from becoming life-threatening.

Did you know?

As of mid-2016, 18.2 million people were receiving advanced retroviral therapy (ART) worldwide. This represents between 43–50% of the 34–39.8 million people living with HIV.

Did you know?

The familiar sounds of your heart are made by the heart's valves as they open and close.

For a complete list of videos, visit our video library