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Unformatted text preview: a.) Definitions – a. Sample Mean: b. Sample Variance: c. Sample Covariance: Examples of related variables: • Height and Weight • Education levels and incomes o More education = more income • GDP and consumption • Investment and interest rate The sample covariance is used to estimate the population variance: Question: How does the sample covariance determine whether a direct, indirect, or no relation exists between the random variable X and the random variable Y? Answer: QUIZ FRIDAY!...
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This note was uploaded on 06/03/2009 for the course ECON 203 taught by Professor Casler during the Spring '09 term at Allegheny.
 Spring '09
 Casler

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