Author Question: Stepwise regression carried out by adding variables to a multiple regression model until no ... (Read 227 times)

PhilipSeeMore

  • Hero Member
  • *****
  • Posts: 561
Stepwise regression carried out by adding variables to a multiple regression model until no additional model makes a significant contribution is called ________.
 
  A) forward selection
  B) backward elimination
  C) general stepwise
  D) parsimony

Question 2

The margin of error used in a confidence interval is found by ________.
 
  A) multiplying the standard error and z/2
  B) multiplying the population standard deviation and the sample size
  C) dividing the population standard deviation by the sample size
  D) multiplying the level of confidence and the standard error


firehawk60

  • Sr. Member
  • ****
  • Posts: 315
Answer to Question 1

A

Answer to Question 2

A



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.

Did you know?

The most common childhood diseases include croup, chickenpox, ear infections, flu, pneumonia, ringworm, respiratory syncytial virus, scabies, head lice, and asthma.

Did you know?

In most climates, 8 to 10 glasses of water per day is recommended for adults. The best indicator for adequate fluid intake is frequent, clear urination.

Did you know?

According to the American College of Allergy, Asthma & Immunology, more than 50 million Americans have some kind of food allergy. Food allergies affect between 4 and 6% of children, and 4% of adults, according to the CDC. The most common food allergies include shellfish, peanuts, walnuts, fish, eggs, milk, and soy.

Did you know?

In 1864, the first barbiturate (barbituric acid) was synthesized.

For a complete list of videos, visit our video library