« previous next »

Author Question: Polynomial regression is a robust method that should be among the first transformations to try on ... (Read 381 times)

dakota nelson

  • Hero Member
  • *****
  • Posts: 604
on: Jun 29, 2018
Polynomial regression is a robust method that should be among the first transformations to try on nonlinear data.
 
 Indicate whether the statement is true or false

Question 2

For a one-group t-test, the degrees of freedom are _____.
 a. n + 1
  b. n(n - 1)
  c. n - 1
  d. n(n + 1)


ergserg

  • Sr. Member
  • ****
  • Posts: 338
Reply #1 on: Jun 29, 2018
Answer to Question 1

F
Polynomial regressions, using various powers of X, must be applied very carefully, because powers of X are highly multicollinear. It is impossible to change X by one unit without also changing X2, X3, and so forth.

Answer to Question 2

C


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

In the United States, congenital cytomegalovirus causes one child to become disabled almost every hour. CMV is the leading preventable viral cause of development disability in newborns. These disabilities include hearing or vision loss, and cerebral palsy.

Did you know?

People with alcoholism are at a much greater risk of malnutrition than are other people and usually exhibit low levels of most vitamins (especially folic acid). This is because alcohol often takes the place of 50% of their daily intake of calories, with little nutritional value contained in it.

Did you know?

The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.

Did you know?

Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.

Did you know?

When intravenous medications are involved in adverse drug events, their harmful effects may occur more rapidly, and be more severe than errors with oral medications. This is due to the direct administration into the bloodstream.

Some possible phylogenies for the robust australopithecines. Some possible phylogenies for the robust australopithecines.
Regression Analysis Regression Analysis
Performing Venipuncture Using the Vacutainer Method Performing Venipuncture Using the Vacutainer Method
How to describe transformations of a sinusoidal function (y=a*sin⁡b(x−c)+d) How to describe transformations of a sinusoidal function (y=a*sin⁡b(x−c)+d)
Advantages of Observational Method Advantages of Observational Method
How do solve the derivative of y=x^3-x^2+x-2 using delta method. How do solve the derivative of y=x^3-x^2+x-2 using delta method.
Video: Types of energy transfer reactions: oxidation-reduction reactions and ATP generation reactions

For a complete list of videos, visit our video library