Answered: If there is a positive correlation…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Question

If there is a positive correlation between number of years studying grammar and tongue length (for children), does that prove that a longer tongue causes more studying of grammar, or vice versa? Can you think of a hidden variable that might be influencing both of the other variables?

A. It proves causation, because the two variables are related implying causation. A longer tongue causes an increase in years of studying. The hidden variable is age.

B. It proves causation, because the two variables are related implying causation. A longer tongue causes an increase in years of studying. There is no hidden variable.

C. It does not prove causation, because older children have a longer tongue and have studied grammar longer. A longer tongue does not cause an increase in years of studying. The hidden variable is age.

It does not prove causation, because older children have a longer tongue and have studied grammar longer. A longer tongue does not cause an increase in years of studying. There is no hidden variabl

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