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Category: linear and generalized linear models

Linear Regression: Comparing Models Between Two Groups with linearHypothesis

Posted on September 21, 2019May 20, 2020 by Alex

In this post, we describe how to compare linear regression models between two groups. Without…

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Why You Should Center Your Features in Linear Regression

Posted on August 31, 2019May 14, 2020 by Alex

In this post we describe centering features in linear regression: you should do it because…

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Binary Classification in R: Logistic Regression, Probit Regression and More

Posted on June 11, 2019September 4, 2020 by Alex

In this post we describe how to do binary classification in R, with a focus…

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Linear Regression Summary(lm): Interpretting in R

Posted on June 1, 2019June 28, 2020 by Alex

Introduction to Linear Regression Summary Printouts In this post we describe how to interpret the…

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Regression with Count Data: Poisson Regression, Overdispersion, Negative Binomial Regression, and Zero Inflation in R

Posted on May 21, 2019May 20, 2020 by Alex

In this post we describe how to do regression with count data using R. In…

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Introduction to Linear Regression Analysis: How to do Linear Regression Analysis in R in Six Steps

Posted on April 16, 2019September 10, 2020 by Alex

In this article we describe how to perform linear regression. We go over some linear…

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Linear Regression: Log Transforming Response

Posted on April 15, 2019September 10, 2020 by Alex

There are several reasons to log transform the response. The obvious one is to fix…

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Linear Regression Plots: Residuals vs Leverage

Posted on March 30, 2019September 10, 2020 by Alex

In this post we analyze the residuals vs leverage plot. This can help detect outliers…

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The Scale Location Plot: Interpretation in R

Posted on March 29, 2019May 20, 2020 by Alex

In this post we describe how to analyze a scale location plot. You may also…

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The QQ Plot in Linear Regression

Posted on March 28, 2019May 20, 2020 by Alex

In this post we describe how to interpret a QQ plot, including how the comparison…

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