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Author Question: When two variables are perfectly correlated, _____. a. one must cause the other, but we don't ... (Read 17 times)

Charlie

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on: Jun 19, 2018
When two variables are perfectly correlated, _____.
 
  a. one must cause the other, but we don't know which is the cause and which is the effect
  b. neither one causes the other
  c. it is certain that a third factor is causing both variables to co-vary
  d. none of these

Question 2

With the exception of division, one can perform all mathematical operations on a ratio scale.
 
  Indicate whether the statement is true or false


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jesse.fleming

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Reply #1 on: Jun 19, 2018
Answer to Question 1

D
Any either one of the variables might cause the other, or a third factor might be causing both. We simply do not know anything about causality given a correlation, even a perfect one.

Answer to Question 2

F


Charlie

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Reply 2 on: Jun 19, 2018
Gracias!

yeungji

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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