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

Author Question: Discuss the courses of action a researcher can follow to control extraneous variables and the ... (Read 82 times)

elizabeth18

  • Hero Member
  • *****
  • Posts: 559
on: Jun 29, 2018
Discuss the courses of action a researcher can follow to control extraneous variables and the statistical recourse that may be available if these fail to prevent a confound.

Question 2

Which of the following represents the standard deviation of the sampling distribution?
 a. range
  b. standard median
  c. dispersion
  d. standard error of the mean


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Loise Hard

  • Sr. Member
  • ****
  • Posts: 340
Reply #1 on: Jun 29, 2018
Answer to Question 1

The three courses of action to control extraneous variables include 1) holding extraneous variables constant where practical, 2) assigning treatments to test units randomly, and 3) using experimental designs that control for the effects of extraneous variables. If an extraneous variable confounds the experiment, analysis of covariance (ANCOVA) can be used to statistically de-bias the dependent variable by accounting for it separately within each of the levels of the confounding variable.

Answer to Question 2

D


elizabeth18

  • Member
  • Posts: 559
Reply 2 on: Jun 29, 2018
YES! Correct, THANKS for helping me on my review

bitingbit

  • Member
  • Posts: 323
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

More than 4.4billion prescriptions were dispensed within the United States in 2016.

Did you know?

Walt Disney helped combat malaria by making an animated film in 1943 called The Winged Scourge. This short film starred the seven dwarfs and taught children that mosquitos transmit malaria, which is a very bad disease. It advocated the killing of mosquitos to stop the disease.

Did you know?

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

Did you know?

A serious new warning has been established for pregnant women against taking ACE inhibitors during pregnancy. In the study, the risk of major birth defects in children whose mothers took ACE inhibitors during the first trimester was nearly three times higher than in children whose mothers didn't take ACE inhibitors. Physicians can prescribe alternative medications for pregnant women who have symptoms of high blood pressure.

Did you know?

Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.

Mechanism of action of antipsychotic drugs: (a) overproduction of dopamine; (b) antipsychotic medica Mechanism of action of antipsychotic drugs: (a) overproduction of dopamine; (b) antipsychotic medica
Centers for disease control and prevention guidelines Centers for disease control and prevention guidelines
An Action Potential An Action Potential
Endocrine and nervous control of blood pressure. Endocrine and nervous control of blood pressure.
Control of transcription of a flagellar protein operon by a riboswitch for the regulatory nucleotide Control of transcription of a flagellar protein operon by a riboswitch for the regulatory nucleotide
Control you knife with one hand and hold the item being cut with the other (1 of 3) Control you knife with one hand and hold the item being cut with the other (1 of 3)
Video: Glycolysis Animation

For a complete list of videos, visit our video library