Author Question: Extraneous variation generally A) reduces internal validity. B) enhances internal validity. C) ... (Read 111 times)

misspop

  • Hero Member
  • *****
  • Posts: 540
Extraneous variation generally
 
  A) reduces internal validity.
  B) enhances internal validity.
  C) has no effect on internal validity.
  D) affects internal validity only when there are more than two levels of the independent variable.

Question 2

An experimenter hopes to find that the predicted variation
 
  A) leads to accepting the null hypothesis.
  B) reduces the difference between-groups.
  C) increases the within-groups variation.
  D) is due to the experimental manipulation.



karlss

  • Sr. Member
  • ****
  • Posts: 321
Answer to Question 1

Answer: A

Answer to Question 2

Answer: D



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

A recent study has found that following a diet rich in berries may slow down the aging process of the brain. This diet apparently helps to keep dopamine levels much higher than are seen in normal individuals who do not eat berries as a regular part of their diet as they enter their later years.

Did you know?

In 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.

Did you know?

In inpatient settings, adverse drug events account for an estimated one in three of all hospital adverse events. They affect approximately 2 million hospital stays every year, and prolong hospital stays by between one and five days.

Did you know?

The most destructive flu epidemic of all times in recorded history occurred in 1918, with approximately 20 million deaths worldwide.

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.

For a complete list of videos, visit our video library