This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: An example of history confounding the results of an interrupted time-series design on the effect of ... (Read 59 times)

asd123

  • Hero Member
  • *****
  • Posts: 557
on: Aug 4, 2018
An example of history confounding the results of an interrupted time-series design on the effect of a speed limit reduction could be
 
  A) an increased number of patrol cars.
  B) an increased number of tickets being given.
  C) an increase in the fine for tickets.
  D) All of the above

Question 2

In time-series designs, what are the two major potential confounding factors that are difficult to control without the addition of a comparison group?
 
  A) instrumentation and history
  B) regression to the mean and instrumentation
  C) history and attrition
  D) instrumentation and selection


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

asdfghjkl;

  • Sr. Member
  • ****
  • Posts: 323
Reply #1 on: Aug 4, 2018
Answer to Question 1

Answer: D

Answer to Question 2

Answer: A


asd123

  • Hero Member
  • *****
  • Posts: 557
Reply #2 on: Aug 4, 2018
Thanks


asdfghjkl;

  • Sr. Member
  • ****
  • Posts: 323
Reply #3 on: Aug 4, 2018
Welcome :)


« previous next »
 

Did you know?

Critical care patients are twice as likely to receive the wrong medication. Of these errors, 20% are life-threatening, and 42% require additional life-sustaining treatments.

Did you know?

The strongest synthetic topical retinoid drug available, tazarotene, is used to treat sun-damaged skin, acne, and psoriasis.

Did you know?

Despite claims by manufacturers, the supplement known as Ginkgo biloba was shown in a study of more than 3,000 participants to be ineffective in reducing development of dementia and Alzheimer’s disease in older people.

Did you know?

The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.

Did you know?

In 1886, William Bates reported on the discovery of a substance produced by the adrenal gland that turned out to be epinephrine (adrenaline). In 1904, this drug was first artificially synthesized by Friedrich Stolz.

Primates exhibit prolonged life histories, spending more time in each stage of life than most other Primates exhibit prolonged life histories, spending more time in each stage of life than most other
The Greenhouse Effect The Greenhouse Effect
Environmental Systems in Space and Time Environmental Systems in Space and Time
F1 and F2 results of Mendel’s dihybrid crosses F1 and F2 results of Mendel’s dihybrid crosses
Time value money Time value money
Smoking’s effect on lungs Smoking’s effect on lungs
Video: Miller's reaction chamber experiment Animation

For a complete list of videos, visit our video library