This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: The covariance between two random variables is the correlation between the two variables divided by ... (Read 49 times)

xclash

  • Hero Member
  • *****
  • Posts: 681
on: Jun 24, 2018
The covariance between two random variables is the correlation between the two variables divided by the product of their standard deviations.
 
  Indicate whether the statement is true or false

Question 2

Explain the difference between the terms variable and data. Include an illustration that demonstrates this difference.
 
  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

recede

  • Sr. Member
  • ****
  • Posts: 315
Reply #1 on: Jun 24, 2018
Answer to Question 1

FALSE

Answer to Question 2

Variable: a characteristic of interest about each individual element of a population or a sample
Data: refer to the value or values of the variable of interest
Illustration: The age of a person when he/she first attends a professional sporting event would be the characteristic of interest about each person and is a variable. Jim was 17 when he first attended a professional sporting event; 17 is the value of the variable for Jim and is data.


xclash

  • Member
  • Posts: 681
Reply 2 on: Jun 24, 2018
YES! Correct, THANKS for helping me on my review

juliaf

  • Member
  • Posts: 344
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

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

Did you know?

Prostaglandins were first isolated from human semen in Sweden in the 1930s. They were so named because the researcher thought that they came from the prostate gland. In fact, prostaglandins exist and are synthesized in almost every cell of the body.

Did you know?

GI conditions that will keep you out of the U.S. armed services include ulcers, varices, fistulas, esophagitis, gastritis, congenital abnormalities, inflammatory bowel disease, enteritis, colitis, proctitis, duodenal diverticula, malabsorption syndromes, hepatitis, cirrhosis, cysts, abscesses, pancreatitis, polyps, certain hemorrhoids, splenomegaly, hernias, recent abdominal surgery, GI bypass or stomach stapling, and artificial GI openings.

Did you know?

The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.

Did you know?

ACTH levels are normally highest in the early morning (between 6 and 8 A.M.) and lowest in the evening (between 6 and 11 P.M.). Therefore, a doctor who suspects abnormal levels looks for low ACTH in the morning and high ACTH in the evening.

IQ and Genetics The closer the genetic relationship, the higher the correlation in IQ. Based on: Br IQ and Genetics The closer the genetic relationship, the higher the correlation in IQ. Based on: Br
The Election of 1912: Divided Republicans, Democratic Victory The Election of 1912: Divided Republicans, Democratic Victory
Scatterplots of Variables Having Several Different Levels of Correlation Scatterplots of Variables Having Several Different Levels of Correlation
Discrete random variables- Probability Distribution Function Discrete random variables- Probability Distribution Function
) Random assortment of maternal (blue) and paternal (purple) chromosomes at metaphase ) Random assortment of maternal (blue) and paternal (purple) chromosomes at metaphase
Table - Correlation Analysis Table - Correlation Analysis
Video: Mechanisms for chromosome movement Animation

For a complete list of videos, visit our video library