A Few Days of Python: Using R in Python
Using R Functions in Python
Using R Functions in Python
My previous post covered the basics of logistic regression. We must now examine the model to understand how well it fits the data and generalizes to other observations. The evaluation process involves the assessment of three distinct areas – goodness of fit, tests of individual predictors, and validation of predicted values – in order to … Continue reading Logistic Regression in R – Part Two
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 , where refers to the parameters and represents the independent variables. The , or log … Continue reading Logistic Regression in R – Part One
I don’t normally work with personal identifiable information such as emails. However, the recent data dump from Ashley Madison got me thinking about how I’d examine a data set composed of email addresses. What are the characteristics of an email that I’d look to extract? How would I perform that task in R? Here’s some … Continue reading Examining Email Addresses in R
Not too long ago, I was on the job market looking for work as an applied statistician or data scientist within the the online marketing industry. One thing I’ve come to expect with almost every company is some sort of homework assignment or challenge where a spreadsheet would be presented along with some guidelines on … Continue reading Homework during the hiring process…no thanks!