Data Preprocessing

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Overview-of-the-data-preprocessing-pipeline-The-data-preprocessing-consists-of-1_W640.jpg Article

Splitting Data - training and testing sets

Time-Series Data


Categorical Variables

Categorical variables require special attention in regression analysis because, unlike dichotomous or continuous variables, they cannot by entered into the regression equation just as they are. Instead, they need to be recoded into a series of variables which can then be entered into the regression model. There are a variety of coding systems that can be used when recoding categorical variables. Coding Systems for Categorical Variables In Regression Analysis | UCLA institute for Digital Research & Education Statistical Consulting

SQL Database Optimization