« previous next »

Author Question: In time-series designs, comparison groups A) are not possible to include. B) are helpful. C) ... (Read 62 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?

Complications of influenza include: bacterial pneumonia, ear and sinus infections, dehydration, and worsening of chronic conditions such as asthma, congestive heart failure, or diabetes.

Did you know?

Fungal nail infections account for up to 30% of all skin infections. They affect 5% of the general population—mostly people over the age of 70.

Did you know?

Every 10 seconds, a person in the United States goes to the emergency room complaining of head pain. About 1.2 million visits are for acute migraine attacks.

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?

Cucumber slices relieve headaches by tightening blood vessels, reducing blood flow to the area, and relieving pressure.

Comparison of the chemical structures of psilocybin and LSD. Psilocybin (left) is derived from a mus Comparison of the chemical structures of psilocybin and LSD. Psilocybin (left) is derived from a mus
Successful male musical groups may owe some of their popularity among preteen girls to adrenarche. Successful male musical groups may owe some of their popularity among preteen girls to adrenarche.
Accumulation of toxicants over time and up the food chain Accumulation of toxicants over time and up the food chain
Disitive Time For Fruits Disitive Time For Fruits
Modern door designs Modern door designs
Incomplete dominance in flowering time of pea plants Incomplete dominance in flowering time of pea plants
Video: Pneumonia Animation

For a complete list of videos, visit our video library