In linear regression, you fit the model (1) However, often the relationship between your…

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

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

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

In this post we describe the fitted vs residuals plot, which allows us to detect…

Note: this is loosely based on Coursera’s A Crash Course on Causality: Inferring Causal Effects…

Background Classical statistics was developed to study how to collect and analyze data in the…

You should use non-parametric tests when the most naive distributional assumptions of a parametric test…

We want to use wearable technology in healthcare to drive interventions. For example, an app…

Machine learning and statistics in healthcare have potentially game changing applications, but also pose new…