Correllation

# Correllation - Chapter 16: Correlation Correlations:...

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Chapter 16: Correlation

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Correlations: Measuring and Describing Relationships A correlation is a statistical method used to measure and describe the relationship between two variables. A relationship exists when changes in one variable tend to be accompanied by consistent and predictable changes in the other variable.

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Correlations: Measuring and Describing Relationships (cont.) A correlation typically evaluates three aspects of the relationship: the direction the form the degree

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Correlations: Measuring and Describing Relationships (cont.) The direction of the relationship is measured by the sign of the correlation (+ or -). A positive correlation means that the two variables tend to change in the same direction; as one increases, the other also tends to increase. A negative correlation means that the two variables tend to change in opposite directions; as one increases, the other tends to decrease.

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Describing Relationships (cont.) The most common
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## This note was uploaded on 01/06/2012 for the course EDP 371 taught by Professor Pituch during the Fall '08 term at University of Texas.

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Correllation - Chapter 16: Correlation Correlations:...

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