12 applied case studies

Projects that can check your work.

Move beyond checklists. Download the miniature dataset, solve the analytical tasks, validate decisions and calculations in-browser, then export a portable submission report.

Data Analytics

Humach Retail: Sales Analytics

Turn a compact sales table into defensible business evidence with aggregation, grain checks and visual reasoning.

mini_sales.csv · 5 validated tasksOpen case study →
Machine Learning

Humach Retention: Customer Risk

Frame a retention problem, define legal features and reason about validation, calibration and actionable interventions.

mini_customers.csv · 5 validated tasksOpen case study →
Data Science

Humach Energy: Demand Forecasting

Use temporal structure, lag reasoning and legal forecasting validation to predict demand without peeking into the future.

mini_energy.csv · 5 validated tasksOpen case study →
Data Science

Humach Health: Risk Screening

Handle missing clinical values, prioritise sensitivity and reason about calibration in a screening setting.

mini_health.csv · 5 validated tasksOpen case study →
Machine Learning

Humach Finance: Fraud Triage

Work with rare-event detection, threshold trade-offs and cost-aware evaluation.

mini_finance.csv · 5 validated tasksOpen case study →
Data Analytics

Humach HR: Attrition Analysis

Analyse attrition drivers while separating predictive association from causal or fair employment decisions.

mini_hr.csv · 5 validated tasksOpen case study →
Data Analytics

Humach Marketing: Campaign Efficiency

Compare channels with cost-aware metrics and avoid confusing volume with efficiency.

mini_marketing.csv · 5 validated tasksOpen case study →
Data Science

Humach Mobility: Trip Demand

Engineer temporal/weather features and reason about demand patterns without leaking future trip counts.

mini_mobility.csv · 5 validated tasksOpen case study →
Machine Learning

Humach Manufacturing: Predictive Maintenance

Detect early failure signals from sensors and reason about recall, false alarms and drift.

mini_manufacturing.csv · 5 validated tasksOpen case study →
Research ML

Humach Research: Repeated-Participant Study

Design participant-safe validation for repeated measurements and recognise subject leakage.

mini_research.csv · 5 validated tasksOpen case study →
Deep Learning

Humach Vision: Image Classification Audit

Audit image metadata, split integrity and class balance before training a vision model.

mini_vision.csv · 5 validated tasksOpen case study →
Graph ML

Humach Graph: Node Classification

Reason about graph structure, node features, message passing and leakage across connected data.

mini_graph.csv · 5 validated tasksOpen case study →