Lecture6 - Covariance Covariance : the linear association...

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Variance, Covariance, & Correlation 1 STAT 225, Dallas Bateman, Spring 2010 Lecture 6
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Variance Variance : measure of variability that utilizes all the data. Based on the difference between the value of each observation and the mean. Population variance : Sample Variance : 2 STAT 225, Dallas Bateman, Spring 2010
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Standard Deviation variance sd 3 STAT 225, Dallas Bateman, Spring 2010
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4 STAT 225, Dallas Bateman, Spring 2010
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Unformatted text preview: Covariance Covariance : the linear association between two variables sample covariance : Population covariance : 5 STAT 225, Dallas Bateman, Spring 2010 Correlation Correlation coefficient: a measure of the relationship between two variables that is not affected by the units of measurement for x and y. Sample correlation : Population correlation : 6 STAT 225, Dallas Bateman, Spring 2010...
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Lecture6 - Covariance Covariance : the linear association...

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