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

Author Question: Which of the following statements about stepwise regression is true? a.Once a variable is ... (Read 145 times)

Zulu123

  • Hero Member
  • *****
  • Posts: 525
on: Jul 24, 2018

  Which of the following statements about stepwise regression is true?
 

  a.Once a variable is chosen for the model, it will never be removed.
  b.The coefficient of each variable in the model remains the same as new variables are added.
  c.If two independent variables are highly correlated, only one of them will enter the equation.
  d.After computing the simple regression model for each independent variable, all variables whose F-statistics are higher than the F-to-enter are immediately added to the model.

Question 2


  When are lagged predictor variables most commonly used?
 

  a.In a analysis of variance.
  b.In a simple linear regression model.
  c.In an exponential model.
  d.In a time series regression model.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

jointhecircus

  • Sr. Member
  • ****
  • Posts: 343
Reply #1 on: Jul 24, 2018
Answer to Question 1

correct: c

Answer to Question 2

correct: d


Zulu123

  • Hero Member
  • *****
  • Posts: 525
Reply #2 on: Jul 24, 2018
Both answers were spot on, thank you once again


jointhecircus

  • Sr. Member
  • ****
  • Posts: 343
Reply #3 on: Jul 24, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

The use of salicylates dates back 2,500 years to Hippocrates's recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.

Did you know?

Since 1988, the CDC has reported a 99% reduction in bacterial meningitis caused by Haemophilus influenzae, due to the introduction of the vaccine against it.

Did you know?

Nitroglycerin is used to alleviate various heart-related conditions, and it is also the chief component of dynamite (but mixed in a solid clay base to stabilize it).

Did you know?

All patients with hyperparathyroidism will develop osteoporosis. The parathyroid glands maintain blood calcium within the normal range. All patients with this disease will continue to lose calcium from their bones every day, and there is no way to prevent the development of osteoporosis as a result.

Did you know?

Pregnant women usually experience a heightened sense of smell beginning late in the first trimester. Some experts call this the body's way of protecting a pregnant woman from foods that are unsafe for the fetus.

Variable expressivity Variable expressivity
Variable Gases: Carbon Dioxide Variable Gases: Carbon Dioxide
How to solve a linear system when the variable is in the denominator position (Question 2 of 2) How to solve a linear system when the variable is in the denominator position (Question 2 of 2)
Replication fork regression as a likely response to a blocking DNA lesion Replication fork regression as a likely response to a blocking DNA lesion
Generation of diversity by variable V-J joining mechanisms Generation of diversity by variable V-J joining mechanisms
How to convert verbal statements into algebraic equations (Part 3) How to convert verbal statements into algebraic equations (Part 3)
Video: Olfaction. or the sense of smell

For a complete list of videos, visit our video library