Extreme Value Theory: Understanding and Predicting Rare Events

Let's have a closer look at EVT, its applications, and its challenges.

Let's have a closer look at EVT, its applications, and its challenges.
In this tutorial, we’ll learn more about the Cauchy distribution, visualize its probability density function, and learn how to use it in Python.

Discover why Welch’s t-Test is the go-to method for accurate statistical comparison, even when variances differ.

A deep-dive into how and why Statsmodels uses numerical optimization instead of closed-form formulas

The most common test of statistical significance originated from the Guinness brewery. Here’s how it works
Your Guide to Choosing the Right Test for Your Data

Understanding probability distributions in data science is crucial. They provide a mathematical framework for modeling and analyzing data.
Discover the origins, theory and uses behind the famous t-distribution
Total Productive Maintenance

How a Scientist Playing Solitaire Forever Changed the Game of Statistics

On the method’s advantages and disadvantages, demonstrated with the synthdid package in R

A primer on the math, logic, and pragmatic application of JS Divergence — including how it is best used in drift monitoring

Think of your last card game – euchre, poker, Go Fish, whatever it was. Would you believe every time you gave the whole deck a proper shuffle, you were holding a sequence of cards which had never

A Discussion of the go-to methods for 5 Types of A/B Metrics
Complete Guideline to Find Dependencies among Categorical Variables with Chi-Square Test
How to use the bootstrap for tests or confidence intervals and why it works
While Fisher’s exact test is a convenient tool for A/B testing, the idea and results of the test are often hard to grasp and difficult to…

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An in-depth guide to the state-of-the-art variance reduction technique for A/B tests
Articles, software, calculators, and opinions.


How to select control variables for causal inference using Directed Acyclic Graphs

Understanding the model’s output plays a major role in business-driven projects, and Sobol can help
A concise explanation of confidence intervals.
An introduction to the Student’s t-distribution and the Student’s t-test

How to calculate μ & σ, the mode, mean, median & variance
Top 30 Probability and Statistics Interview Questions that can help you sharpen your skills to ace your data science interview

P-values & ice cream consumption simply explained.
How to Model random Processes with Distributions and Fit them to Observational Data
In 1996, Appleton, French, and Vanderpump conducted an experiment to study the effect of smoking on a sample of people. The study was conducted over twenty years and included 1314 English women…

Free books, lectures, blogs, papers, and more for a causal inference crash course
The smart trick to choose the right model

How not to fail your online controlled experimentation
Strip charts are extremely useful to make heads or tails from dozens (and up to several hundred) of time series over very long periods of…

Part one of a series on how we will measure discrepancies in Airbnb guest acceptance rates using anonymized perceived demographic data.

A Log-Normal Distribution is a continuous probability distribution of a random variable whose logarithm is normally distributed.
This article introduces important subcategories of inferential statistical tests and discusses descriptive statistical measures related to the normal distribution.

Intuitive explanations for the Normal, Bernoulli, Binomial, Poisson, Exponential, Gamma and Weibull distribution — with Python example code
Normality tests to check if a variable or sample has a normal distribution.

It is often desirable to quantify the difference between probability distributions for a given random variable. This occurs frequently in machine learning, when we may be interested in calculating the difference between an actual and observed probability distribution. This can…

Assumptions, relationships, simulations, and so on
With so many types of data distributions to consider in data science, how do you choose the right one to model your data? This guide will overview the most important distributions you should be familiar with in your work.

An easy-to-follow guide next time you forget how to do power calculations

At first glance, the Lognormal, Weibull, and Gamma distributions distributions look quite similar to each other. Selecting between the three models is “quite difficult” (Siswadi & Quesenberry) and the problem of testing which distribution is the best fit for data has been…

Data Science & Machine Learning Interviews

From Controlling for Testing Errors to Selecting the Right Test