O QUE É CORRELAÇÃO? | Correlação x Causalidade 1/2

In this video, we investigate a result that seems strange at first glance: schools with more full-time places have, on average, LOWER scores on the ENEM (Brazilian National High School Exam). Does this mean that full-time education worsens learning? The short answer: not necessarily. The full answer: it depends... and that's exactly what you're going to understand today. We'll analyze what correlation is, how to interpret negative relationships in data, and why this is NOT evidence of causality. This is the first step before getting into what really matters: how to identify true causal effects (the topic of the next lesson). If you want to learn how to read data rigorously, avoiding hasty conclusions, this video is for you!