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 43 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?

The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.

Did you know?

About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.

Did you know?

Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.

Did you know?

Vaccines cause herd immunity. If the majority of people in a community have been vaccinated against a disease, an unvaccinated person is less likely to get the disease since others are less likely to become sick from it and spread the disease.

Did you know?

The first monoclonal antibodies were made exclusively from mouse cells. Some are now fully human, which means they are likely to be safer and may be more effective than older monoclonal antibodies.

Global Distribution of Earthquakes Global Distribution of Earthquakes
Cumulative Standard Normal Distribution Cumulative Standard Normal Distribution
The typical distribution of neurofibrillary tangles and amyloid plaques in the brains of patients ... The typical distribution of neurofibrillary tangles and amyloid plaques in the brains of patients ...
IQ scores form what mathematicians call a normal distribution "bell curve" IQ scores form what mathematicians call a normal distribution "bell curve"
One day, I hope different colleges and universities that online degrees will offer Bachelor of Scien One day, I hope different colleges and universities that online degrees will offer Bachelor of Scien
The threshold model explains the discontinuous distribution of some multifactorial traits. In this m The threshold model explains the discontinuous distribution of some multifactorial traits. In this m
Video: Major Elements in Biological Molecules: Carbohydrates

For a complete list of videos, visit our video library