Logistic Regression in R – Part One

Logistic regression is used to analyze the relationship between a dichotomous dependent variable and one or more categorical or continuous independent variables. It specifies the likelihood of the response variable as a function of various predictors. The model expressed as $latex log(odds) = \beta_0 + \beta_1*x_1 + … + \beta_n*x_n $, where $latex \beta$ refers …

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The Command Line is Your Friend: A Quick Introduction

The command line can be a scary place for people who are traditionally accustomed to using point-and-click mechanisms for executing tasks on their computer. While the idea of interacting with files and software via text may seem like a terrifying concept, the terminal is a powerful tool that can boost productivity and provide users with …

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Graphviz by Example: Part One

Introduction GraphViz is an open-source software package developed by AT&T Labs for generating directed graphs and flowcharts. Outputs are created using Dot, a plain text graph description language that is part of the Graphviz package. GraphViz is a powerful application that allows users to create appealing flowcharts without getting hung up on the layout or positioning of the nodes. …

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