Data Detective Lab: Find Bad Metrics in a Messy CSV

Bad data can make a polished dashboard lie. This workshop gives attendees a messy CSV and asks them to investigate before trusting the numbers.

We will check missing values, duplicates, impossible dates, broken categories, and metrics that change when the cleaning rule changes.

The session is built for beginners who want better data instincts, not just another pandas syntax walkthrough.

糟糕的数据会让精美的仪表板呈现出虚假的信息。本次研讨会将为参与者提供一份杂乱的 CSV 文件，并要求他们在信任这些数据之前先进行深入调查。

我们将检查缺失值、重复项、不可能出现的日期、错误的分类，以及当清洗规则发生变化时会随之改变的指标。

本次课程专为想要提升数据直觉的初学者而设计，而非仅仅是又一次关于 pandas 语法的演练。