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Author Question: Which entropy R2 value implies perfect predictive power? a. 0 b. -1.0 c. +0.5 d. ... (Read 72 times)

moongchi

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on: Jun 28, 2018
Which entropy R2 value implies perfect predictive power?
 a. 0
  b. -1.0
  c. +0.5
  d. +1.0

Question 2

Explain how a researcher makes causal inferences.


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kjohnson

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Reply #1 on: Jun 28, 2018
Answer to Question 1

D

Answer to Question 2

A causal inference can only be supported when very specific causal evidence exists. Three critical pieces of causal evidence are:

(1) Temporal sequence - deals with the time order of events. The cause must occur before the effect.
(2) Concomitant variation - occurs when two events covary, meaning they vary systematically. This means that when a change in the cause occurs, a change in the outcome also is observed.
(3) Nonspurious association - means that any covariation between a cause and an effect is true and not simply due to some other variable.


moongchi

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Reply 2 on: Jun 28, 2018
Thanks for the timely response, appreciate it

tkempin

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Reply 3 on: Yesterday
Excellent

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