
Measuring the Causal Effect of Free Shipping with Regression Discontinuity Design
When Amazon Prime launched in 2005, it changed delivery costs from a transaction cost into a membership benefit, something customers

When Amazon Prime launched in 2005, it changed delivery costs from a transaction cost into a membership benefit, something customers

On 20 January 2026, Manchester City arrived at Aspmyra Stadion in Bodo for a Champions League group stage game. They

Women’s education is one of the strongest predictors of fertility decline globally — 157 countries, r = -0.79. The pattern

When Amazon Prime launched in 2005, it changed delivery costs from a transaction cost into a membership benefit, something customers

Every analyst stared at a dashboard showing a seemingly clear pattern many times. Premium customers churn more, marketing campaigns decreased

The most important question in almost any organisation is also the most difficult one: Did something work? You launch a new

Marketing teams often celebrate when dashboards show a clear, positive correlation between sales and advertising activity. Our campaigns are driving

Estimating the effect of one variable on another is at the core of causal inference. However, doing this with observational

Difference-in-Differences (DiD) is a widely used technique to estimate causal effects when randomized experiments are not feasible. From policy evaluation

In the world of marketing, deciding which customers to target with specific promotions can feel like a never-ending puzzle — especially when

Evaluating the impact of treatments or interventions is critical in various fields, including business and healthcare. Determining whether a specific

One can feel intrigued when a newspaper like the Washington Post writes an article about the statistical method. Statistical modeling