« previous next »

Author Question: Extraneous variables need to be controlled to ensure that the experiment is externally valid. ... (Read 17 times)

Alainaaa8

  • Hero Member
  • *****
  • Posts: 576
on: Jun 29, 2018
Extraneous variables need to be controlled to ensure that the experiment is externally valid.
 
 Indicate whether the statement is true or false

Question 2

A combination of two or more probability sampling techniques is called a(n) _____ sample.
 Fill in the blank(s) with correct word


covalentbond

  • Sr. Member
  • ****
  • Posts: 336
Reply #1 on: Jun 29, 2018
Answer to Question 1

F
Controlling extraneous variables will assure researchers of internal validity, not external validity.

Answer to Question 2

multistage area


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

About 60% of newborn infants in the United States are jaundiced; that is, they look yellow. Kernicterus is a form of brain damage caused by excessive jaundice. When babies begin to be affected by excessive jaundice and begin to have brain damage, they become excessively lethargic.

Did you know?

When taking monoamine oxidase inhibitors, people should avoid a variety of foods, which include alcoholic beverages, bean curd, broad (fava) bean pods, cheese, fish, ginseng, protein extracts, meat, sauerkraut, shrimp paste, soups, and yeast.

Did you know?

In the ancient and medieval periods, dysentery killed about ? of all babies before they reach 12 months of age. The disease was transferred through contaminated drinking water, because there was no way to adequately dispose of sewage, which contaminated the water.

Did you know?

As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.

Did you know?

The average older adult in the United States takes five prescription drugs per day. Half of these drugs contain a sedative. Alcohol should therefore be avoided by most senior citizens because of the dangerous interactions between alcohol and sedatives.

Graphic display of hypothetical results of a predator removal experiment. Graphic display of hypothetical results of a predator removal experiment.
Ganzfeld experiment Ganzfeld experiment
The coolant temperature is controlled by the thermostat, which opens and allows coolant to flow to ... The coolant temperature is controlled by the thermostat, which opens and allows coolant to flow to ...
Schematic illustration of Myers and Sperry’s (1953) groundbreaking split-brain experiment. There ... Schematic illustration of Myers and Sperry’s (1953) groundbreaking split-brain experiment. There ...
Redi Experiment Redi Experiment
Summary of the Hershey–Chase experiment demonstrating that DNA, and not protein Summary of the Hershey–Chase experiment demonstrating that DNA, and not protein
Video: Transmission Across a Synapse

For a complete list of videos, visit our video library