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

Author Question: The mean and variance of a chi-square distribution with degrees of freedom is determined by the ... (Read 116 times)

daltonest1984

  • Hero Member
  • *****
  • Posts: 536
on: Jun 24, 2018
The mean and variance of a chi-square distribution with  degrees of freedom is determined by the number of degrees of freedom.
 
  Indicate whether the statement is true or false

Question 2

What is the rationale for df = (r - 1 )(c - 1 ) in conducting a chi-square test of independence for a contingency table with r rows and c columns?
 
  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

tandmlomax84

  • Sr. Member
  • ****
  • Posts: 323
Reply #1 on: Jun 24, 2018
Answer to Question 1

TRUE

Answer to Question 2

The rationale for df = (r - 1 )(c - 1 ) is that this quantity represents the number of cell frequencies that are free to vary. Given that we know the sample size (the total number of observations in the table), we need to know the contents of (r - 1 ) rows and (c - 1 ) columns in order to completely fill in the cells within the r  c table.


daltonest1984

  • Hero Member
  • *****
  • Posts: 536
Reply #2 on: Jun 24, 2018
Thank you


tandmlomax84

  • Sr. Member
  • ****
  • Posts: 323
Reply #3 on: Jun 24, 2018
No problemo


« previous next »
 

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 eye muscles are the most active muscles in the whole body. The external muscles that move the eyes are the strongest muscles in the human body for the job they have to do. They are 100 times more powerful than they need to be.

Did you know?

Illness; diuretics; laxative abuse; hot weather; exercise; sweating; caffeine; alcoholic beverages; starvation diets; inadequate carbohydrate consumption; and diets high in protein, salt, or fiber can cause people to become dehydrated.

Did you know?

There are actually 60 minerals, 16 vitamins, 12 essential amino acids, and three essential fatty acids that your body needs every day.

Did you know?

Essential fatty acids have been shown to be effective against ulcers, asthma, dental cavities, and skin disorders such as acne.

Sprain. A sprain involves damage to one or more ligaments, and is categorized into three degrees of Sprain. A sprain involves damage to one or more ligaments, and is categorized into three degrees of
Distribution of the gibbons. Distribution of the gibbons.
The Distribution of Dominant and Minority Groups The Distribution of Dominant and Minority Groups
The heat range of a spark plug is determined by the distance the heat has to flow from the tip to ... The heat range of a spark plug is determined by the distance the heat has to flow from the tip to ...
Distribution and Forms of Precipitation: Snow Distribution and Forms of Precipitation: Snow
Write in vertex form by completing the square Write in vertex form by completing the square
Video: Stroke volume - preload, sarcomere length and Frank -Starling law

For a complete list of videos, visit our video library