« previous next »

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

misspop

  • Hero Member
  • *****
  • Posts: 540
on: Aug 4, 2018
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
Reply #1 on: Aug 4, 2018
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
« previous next »
 

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.

Location, appearance, and internal structure of the mammalian pancreas. Location, appearance, and internal structure of the mammalian pancreas.
Internal structures of main sequence stars, convection zones with arrowed cycles and radiative zones Internal structures of main sequence stars, convection zones with arrowed cycles and radiative zones
Internal structures at the front of the eye. Internal structures at the front of the eye.
An aryballe vase or decanter made for carrying body oils clearly demonstrates that ancient Greeks we An aryballe vase or decanter made for carrying body oils clearly demonstrates that ancient Greeks we
This internal bypass passage in the thermostat housing directs cold coolant to the water pump. This internal bypass passage in the thermostat housing directs cold coolant to the water pump.
Component of right internal ear Component of right internal ear
Video: Oral Hygiene & Braces Animation

For a complete list of videos, visit our video library