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Author Question: In order to establish a connection between an explanatory and response variable in an observational ... (Read 113 times)

Davideckstein7

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on: Jul 24, 2018
In order to establish a connection between an explanatory and response variable in an observational study, what is needed?
 a. Statistical methods that examine the connection.
  b. A comparison to determine if changes in the explanatory variable are related to changes in the response variable.
  c. Either a) or b)
  d. You can never establish a connection between an explanatory and a response variable without doing a randomized experiment.

Question 2

Name one disadvantage and one advantage of an observational study over an experiment.


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jamesnevil303

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Reply #1 on: Jul 24, 2018
Answer to Question 1

C

Answer to Question 2

DISADVANTAGE  THE RESEARCHERS OBSERVE, BUT CANNOT CONTROL, THE EXPLANATORY VARIABLES. ADVANTAGE  THEY ARE MORE LIKELY TO MEASURE PARTICIPANTS IN THEIR NATURAL SETTING (AND DO NOT MANIPULATE THEIR ENVIRONMENT).


Davideckstein7

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Reply 2 on: Jul 24, 2018
Excellent

ghepp

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Reply 3 on: Yesterday
Gracias!

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