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

Author Question: When the errors are heteroskedastic, then A) WLS is efficient in large samples, if the functional ... (Read 152 times)

Yolanda

  • Hero Member
  • *****
  • Posts: 757
on: Jun 29, 2018
When the errors are heteroskedastic, then
 
  A) WLS is efficient in large samples, if the functional form of the heteroskedasticity is known.
  B) OLS is biased.
  C) OLS is still efficient as long as there is no serial correlation in the error terms.
  D) weighted least squares is efficient.

Question 2

If, in addition to the least squares assumptions made in the previous chapter on the simple regression model, the errors are homoskedastic, then the OLS estimator is
 
  A) identical to the TSLS estimator.
  B) BLUE.
  C) inconsistent.
  D) different from the OLS estimator in the presence of heteroskedasticity.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Kaytorgator

  • Sr. Member
  • ****
  • Posts: 345
Reply #1 on: Jun 29, 2018
Answer to Question 1

Answer: A

Answer to Question 2

Answer: B


Yolanda

  • Member
  • Posts: 757
Reply 2 on: Jun 29, 2018
YES! Correct, THANKS for helping me on my review

jackie

  • Member
  • Posts: 324
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

The average adult has about 21 square feet of skin.

Did you know?

It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.

Did you know?

Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.

Did you know?

The average person is easily confused by the terms pharmaceutics and pharmacology, thinking they are one and the same. Whereas pharmaceutics is the science of preparing and dispensing drugs (otherwise known as the science of pharmacy), pharmacology is the study of medications.

Did you know?

To combat osteoporosis, changes in lifestyle and diet are recommended. At-risk patients should include 1,200 to 1,500 mg of calcium daily either via dietary means or with supplements.

Exploring the functional activity of brain regions by using fMRI scans. Exploring the functional activity of brain regions by using fMRI scans.
Large regions of the Boreal forest in Alberta have been divided into a grid due to industrial develo Large regions of the Boreal forest in Alberta have been divided into a grid due to industrial develo
Mutualisms, such as those that occur among plants and pollinators, generally involve large numbers o Mutualisms, such as those that occur among plants and pollinators, generally involve large numbers o
The approval of a new drug is a four-stage process: (1) preclinical investigation, (2) clinical inve The approval of a new drug is a four-stage process: (1) preclinical investigation, (2) clinical inve
Samples from the range of continuous variation in human eye color. Different alleles of more than on Samples from the range of continuous variation in human eye color. Different alleles of more than on
Orientation and structure of a nephron, the functional unit of the kidney. Orientation and structure of a nephron, the functional unit of the kidney.
Video: How do the different types of chromatography work? (No Audio)

For a complete list of videos, visit our video library