Spurious effects - PowerPoint PPT Presentation

Multivariate Statistics

Multivariate Statistics. Regression Analysis W. M. van der Veld University of Amsterdam. Overview. Digression: Galton revisited Types of regression Goals of regression Spurious effects Simple regression Prediction Fitting a line OLS estimation Assessment of the fit (R 2 ) Assumptions

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Crosstabs

Crosstabs. Types of relationships. Linear Spurious Intervening Interaction effects. Spurious effects. Does past participation affect current participation?. Before September 2004, had you ever written a letter to some member of the local government? yes, no.

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535 views • 32 slides

Basic well Logging Analysis – Sonic Log

Basic well Logging Analysis – Sonic Log. Hsieh, Bieng-Zih Fall 2009. Sonic Log. The sonic log is a porosity log that measures interval transit time ( Δt ) of a compressional sound wave traveling through one foot of formation.

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2.47k views • 26 slides

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