« previous next »

Author Question: A _____ is a graphical presentation of the relationship between two quantitative variables. a. ... (Read 85 times)

roselinechinyere27m

  • Hero Member
  • *****
  • Posts: 557
on: Jun 24, 2018
A _____ is a graphical presentation of the relationship between two quantitative variables.
 a. histogram
  b. bar chart
  c. pie chart
  d. scatter chart

Question 2

Discuss some of the signals for the presence of multicollinearity.


alexanderhamilton

  • Sr. Member
  • ****
  • Posts: 334
Reply #1 on: Jun 24, 2018
Answer to Question 1

D

Answer to Question 2

There are several clues to the presence of multicollinearity: (1) an independent variable known to be an important predictor ends up having a partial regression coefficient that is not significant; (2) a partial regression coefficient exhibits the wrong sign; and/or, (3) when an independent variable is added or deleted, the partial regression coefficients for the other variables change dramatically. A more practical way to identify multicollinearity is through the examination of a correlation matrix, which is a matrix that shows the correlation of each variable with each of the other variables. A high correlation between two independent variables is an indication of multicollinearity.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Patients should never assume they are being given the appropriate drugs. They should make sure they know which drugs are being prescribed, and always double-check that the drugs received match the prescription.

Did you know?

The most dangerous mercury compound, dimethyl mercury, is so toxic that even a few microliters spilled on the skin can cause death. Mercury has been shown to accumulate in higher amounts in the following types of fish than other types: swordfish, shark, mackerel, tilefish, crab, and tuna.

Did you know?

Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.

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?

When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.

Relationship of the spindle-assembly checkpoint (SAC) with the cell-cycle machinery Relationship of the spindle-assembly checkpoint (SAC) with the cell-cycle machinery
Relationship between fruit radius and beak length in populations of native and introduced species of Relationship between fruit radius and beak length in populations of native and introduced species of
Position of the lungs within the thoracic cavity; anterior view illustrating regions of the lungs an Position of the lungs within the thoracic cavity; anterior view illustrating regions of the lungs an
Two views of the phylogenetic relationship between Neandertals and modern H. sapiens. Two views of the phylogenetic relationship between Neandertals and modern H. sapiens.
The Power and Control Wheels of Abusive Relationships When one person in a relationship repeatedly ... The Power and Control Wheels of Abusive Relationships When one person in a relationship repeatedly ...
5-4 The relationship between vapor pressure and temperature—in this case for water. As the ... 5-4 The relationship between vapor pressure and temperature—in this case for water. As the ...
Video: Lipid digestion - mouth, stomach and small intestine

For a complete list of videos, visit our video library