Author Question: Under what circumstances is it necessary to use the coefficient of variation to compare relative ... (Read 48 times)

abarnes

  • Hero Member
  • *****
  • Posts: 556
Under what circumstances is it necessary to use the coefficient of variation to compare relative variability between two or more distributions?
 
  A) When the means of the distributions are equal
  B) When the means of the distributions are not equal
  C) When the standard deviations of the distributions are not equal
  D) When the standard deviations of the distributions are equal

Question 2

A joint probability distribution for discrete random variables X and Y is denoted by ________.
 
  A) P(Xi, Yi) = Xi  Yi
  B) P(X = x, Y = y) = f(x, y)
  C) P(X > Y) = f(x, y)
  D) P(j(x), j(y))


CAPTAINAMERICA

  • Sr. Member
  • ****
  • Posts: 325
Answer to Question 1

B

Answer to Question 2

B



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

For high blood pressure (hypertension), a new class of drug, called a vasopeptidase blocker (inhibitor), has been developed. It decreases blood pressure by simultaneously dilating the peripheral arteries and increasing the body's loss of salt.

Did you know?

Disorders that may affect pharmacodynamics include genetic mutations, malnutrition, thyrotoxicosis, myasthenia gravis, Parkinson's disease, and certain forms of insulin-resistant diabetes mellitus.

Did you know?

The human body's pharmacokinetics are quite varied. Our hair holds onto drugs longer than our urine, blood, or saliva. For example, alcohol can be detected in the hair for up to 90 days after it was consumed. The same is true for marijuana, cocaine, ecstasy, heroin, methamphetamine, and nicotine.

Did you know?

About 3% of all pregnant women will give birth to twins, which is an increase in rate of nearly 60% since the early 1980s.

Did you know?

Symptoms of kidney problems include a loss of appetite, back pain (which may be sudden and intense), chills, abdominal pain, fluid retention, nausea, the urge to urinate, vomiting, and fever.

For a complete list of videos, visit our video library