« previous next »

Author Question: In time-series designs, comparison groups A) are not possible to include. B) are helpful. C) ... (Read 61 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?

Bisphosphonates were first developed in the nineteenth century. They were first investigated for use in disorders of bone metabolism in the 1960s. They are now used clinically for the treatment of osteoporosis, Paget's disease, bone metastasis, multiple myeloma, and other conditions that feature bone fragility.

Did you know?

Thyroid conditions may make getting pregnant impossible.

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?

Approximately one in four people diagnosed with diabetes will develop foot problems. Of these, about one-third will require lower extremity amputation.

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.

A comparison of selected species of bacteria and archaea. A comparison of selected species of bacteria and archaea.
Shy children often have a high arousal level in novel social situations. Over time, parents can help ... Shy children often have a high arousal level in novel social situations. Over time, parents can help ...
Radiation Side Effects, Healing Time, and Intervention Radiation Side Effects, Healing Time, and Intervention
Disitive Time For Nuts Disitive Time For Nuts
Functional Groups of Carbon Functional Groups of Carbon
Sequence Series Arithmatic Progression Problem Sequence Series Arithmatic Progression Problem
Video: Conjunctivitis

For a complete list of videos, visit our video library