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13.2 Testing the Significance of the Correlation Coefficient
Whether an observed r is far enough from zero to claim a real population correlation, using a t statistic with n minus 2 degrees of freedom.
Introductory Business Statistics 2e, 13.2 Testing the Significance of the Correlation Coefficient
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2 exercises
13.2 Exercise 1
Define a t Test of a Regression Coefficient, and give a unique example of its use.
2.5
13.2 Exercise 2
The correlation between scores on a neuroticism test and scores on an anxiety test is high and positive; therefore
- anxiety causes neuroticism
- those who score low on one test tend to score high on the other.
- those who score low on one test tend to score low on the other.
- no prediction from one test to the other can be meaningfully made.
2.5
Adapted from Introductory Business Statistics 2e © 2023 Rice University. Licensed under CC BY 4.0. Source: Introductory Business Statistics 2e. Imported at revision 50ec917.