« previous next »

Author Question: In time-series designs, comparison groups A) are not possible to include. B) are helpful. C) ... (Read 24 times)

storky111

  • Hero Member
  • *****
  • Posts: 561
on: Aug 4, 2018
In time-series designs, comparison groups
 
  A) are not possible to include.
  B) are helpful.
  C) always include random assignment.
  D) cannot exceed two groups.

Question 2

By adding comparison groups in a study of the effects of child seat belt legislation in California, Guerin and MacKinnon (1985) were able to
 
  A) perform more high-powered statistical procedures.
  B) attenuate the reliability of their observations.
  C) study the effects of other types of legislation on their target group.
  D) increase confidence in their conclusions.


Rilsmarie951

  • Sr. Member
  • ****
  • Posts: 316
Reply #1 on: Aug 4, 2018
Answer to Question 1

Answer: B

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?

When Gabriel Fahrenheit invented the first mercury thermometer, he called "zero degrees" the lowest temperature he was able to attain with a mixture of ice and salt. For the upper point of his scale, he used 96°, which he measured as normal human body temperature (we know it to be 98.6° today because of more accurate thermometers).

Did you know?

According to the FDA, adverse drug events harmed or killed approximately 1,200,000 people in the United States in the year 2015.

Did you know?

As many as 20% of Americans have been infected by the fungus known as Histoplasmosis. While most people are asymptomatic or only have slight symptoms, infection can progress to a rapid and potentially fatal superinfection.

Did you know?

According to the Migraine Research Foundation, migraines are the third most prevalent illness in the world. Women are most affected (18%), followed by children of both sexes (10%), and men (6%).

Did you know?

The U.S. Preventive Services Task Force recommends that all women age 65 years of age or older should be screened with bone densitometry.

Comparison of small subunit (SSU) rRNA gene sequences from three animals and a protist. Comparison of small subunit (SSU) rRNA gene sequences from three animals and a protist.
Comparison of the radius of fruits produced by native and introduced species of Sapindaceae Comparison of the radius of fruits produced by native and introduced species of Sapindaceae
Nerves can transmit many signals at the same time Nerves can transmit many signals at the same time
Single-dose drug administration: pharmacokinetic values for this drug are as follows: onset of actio Single-dose drug administration: pharmacokinetic values for this drug are as follows: onset of actio
Common Functional Groups Found in Biomolecules Common Functional Groups Found in Biomolecules
Estimates of the dates of origin and extinction of the three main groups of hominins (green, blue, a Estimates of the dates of origin and extinction of the three main groups of hominins (green, blue, a
Video: Virtual Enzyme Kinetics & Lineweaver Burk Plot

For a complete list of videos, visit our video library