Data Science

Data ScientistData AnalystMachine Learning EngineerAnalytics Engineer

From your first dataframe to models running in production. Statistics that stop you fooling yourself, honest evaluation, feature engineering, and the parts nobody warns you about — leakage, imbalance, drift and explaining an uncertain result to someone who wants a yes or no. Built around the questions data science interviews actually ask.

Curriculum

Tier 0 · Fundamentals

Data From Absolute Zero

0/4

01Why Data Work Exists12m · +25 XP 02What a Dataset Actually Is15m · +25 XP 03Your First Analysis17m · +25 XP 04How Numbers Mislead15m · +30 XP

Data Foundations

0/4

01What Data Science Actually Is13m · +25 XP 02Python and pandas for Data Work18m · +30 XP 03Descriptive Statistics That Do Not Mislead16m · +30 XP 04Sampling, Survivorship and the Data You Never See17m · +45 XP

Data Wrangling

0/4

01Cleaning and Missing Data17m · +30 XP 02Joining and Reshaping Data15m · +30 XP 03Exploratory Data Analysis and Visualisation16m · +30 XP 04When the Data No Longer Fits in Memory17m · +45 XP

Tier 1 · Core

Statistics and Inference

0/4

01Probability and Distributions17m · +30 XP 02Hypothesis Testing and p-values18m · +35 XP 03A/B Testing Done Properly18m · +35 XP 04Bayesian Thinking and the Bootstrap18m · +45 XP

Machine Learning Foundations

0/4

01Supervised Learning18m · +35 XP 02Evaluating Models Honestly18m · +35 XP 03Overfitting, Regularisation and Cross-Validation17m · +35 XP 04Calibration, Thresholds and Decisions17m · +45 XP

Tier 2 · Advanced

Applied Machine Learning

0/4

01Feature Engineering18m · +40 XP 02Imbalanced Data and Data Leakage18m · +40 XP 03Model Selection and Tuning15m · +35 XP 04Time Series and Forecasting Without Fooling Yourself18m · +45 XP

Data in Production

0/4

01SQL and Data Pipelines17m · +35 XP 02Deploying and Monitoring Models16m · +40 XP 03Bias, Ethics and Communicating Results16m · +40 XP 04Feature Stores and the Boring Parts of ML Platforms17m · +45 XP

Language Models in Practice

0/4

01What a Language Model Actually Does16m · +35 XP 02Getting Output You Can Rely On16m · +35 XP 03Retrieval: Grounding Answers in Your Own Data18m · +35 XP 04Evaluating and Operating a System You Cannot Unit Test17m · +40 XP