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Exploring the Relationship between X and Y: A Regression Analysis - Prof. Brett D. Hunter, Study notes of Data Analysis & Statistical Methods

Colorado State University (CSU)Data Analysis & Statistical Methods

Prof. Brett D. Hunter

An introduction to the process of investigating the relationship between two numeric variables, x and y, using regression analysis. The initial step of constructing a scatterplot to determine the direction and potential strength of the relationship, as well as the possibility of predicting y based on x. Questions addressed include the existence, strength, and type of relationship.

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2010/2011

Uploaded on 11/15/2011

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Download Exploring the Relationship between X and Y: A Regression Analysis - Prof. Brett D. Hunter and more Study notes Data Analysis & Statistical Methods in PDF only on Docsity! 9 November Regression Assume we have bivariate data with variables X and Y, where X and Y are both numeric. Question of interest Is there a relationship between X and Y? If there is: How strong is it? What type of relationship is it? Can I predict Y using X? First step is exploring a possible relationship: Construct a scatterplot. Is the relationship positive or negative? Positive: As X increases, Y also increases Negative: As X increases, Y decreases

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Exploring the Relationship between X and Y: A Regression Analysis - Prof. Brett D. Hunter, Study notes of Data Analysis & Statistical Methods

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