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

Author Question: Why, in the absence of any other evidence, can't you use data from an observational study to ... (Read 21 times)

Davideckstein7

  • Hero Member
  • *****
  • Posts: 555
on: Jul 24, 2018
Why, in the absence of any other evidence, can't you use data from an observational study to establish a causal link between two measurement variables?

Question 2

Suppose two measurement variables are legitimately related or correlated; does this imply that there is a causal connection between them? Explain why or why not.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

joewallace

  • Sr. Member
  • ****
  • Posts: 337
Reply #1 on: Jul 24, 2018
Answer to Question 1

THE SUBJECTS ARE NOT RANDOMLY ASSIGNED TO TREATMENTS; THERE COULD BE CONFOUNDING VARIABLES.

Answer to Question 2

NO. IT DEPENDS ON HOW THE DATA WERE COLLECTED.


Davideckstein7

  • Hero Member
  • *****
  • Posts: 555
Reply #2 on: Jul 24, 2018
Thanks


joewallace

  • Sr. Member
  • ****
  • Posts: 337
Reply #3 on: Jul 24, 2018
Welcome :)


« previous next »
 

Did you know?

Tobacco depletes the body of vitamins A, C, and E, which can result in any of the following: dry hair, dry skin, dry eyes, poor growth, night blindness, abscesses, insomnia, fatigue, reproductive system problems, sinusitis, pneumonia, frequent respiratory problems, skin disorders, weight loss, rickets, osteomalacia, nervousness, muscle spasms, leg cramps, extremity numbness, bone malformations, decayed teeth, difficulty in walking, irritability, restlessness, profuse sweating, increased uric acid (gout), joint damage, damaged red blood cells, destruction of nerves, infertility, miscarriage, and many types of cancer.

Did you know?

Asthma cases in Americans are about 75% higher today than they were in 1980.

Did you know?

More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.

Did you know?

In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

Did you know?

All adverse reactions are commonly charted in red ink in the patient's record and usually are noted on the front of the chart. Failure to follow correct documentation procedures may result in malpractice lawsuits.

A study by Seehausen and van Alphen involving the effects of male coloration on female choice in Afr A study by Seehausen and van Alphen involving the effects of male coloration on female choice in Afr
The threespine stickleback (Gasterosteus aculeatus) has been used as a model organism for the study The threespine stickleback (Gasterosteus aculeatus) has been used as a model organism for the study
Abundant cave art after about 30,000 years ago is evidence of the importance of symbolic behavior fo Abundant cave art after about 30,000 years ago is evidence of the importance of symbolic behavior fo
Women who are monozygotic twins and have the same genes are more similar in their marital happiness Women who are monozygotic twins and have the same genes are more similar in their marital happiness
Two behavioral paradigms that are used extensively in the study of the neural mechanisms of ... Two behavioral paradigms that are used extensively in the study of the neural mechanisms of ...
Basic Marketing Research: Using Microsoft Excel Data Analysis Basic Marketing Research: Using Microsoft Excel Data Analysis
Video: Stages of Mitosis - Prophase, Prometaphase, Metaphase, Anaphase & Telophase

For a complete list of videos, visit our video library