AI & Data
Statistics & Data Science Methods Challenges
Statistics & Data Science Methods challenges put you inside the work of drawing trustworthy conclusions from data. You'll build Statistics Fundamentals and Statistical Analysis, run Exploratory Data Analysis, Hypothesis Testing, Confidence Intervals, and Linear Regression, and design clean Sampling Methods.
From there you'll handle the harder edges — Bayesian methods, Causal inference, A/B testing with statistical significance, Monte Carlo Simulation, and Uncertainty Quantification — applying Experimental design the way data scientists actually do. Each challenge you solve earns a verified credential you can share with recruiters.
Recommended Challenges
- All
- Data Analysis
- Experimental design
- Simulation
- Exploratory Data Analysis
- Statistical Analysis
- Uncertainty Quantification
- Logistic regression
- Cost Modeling
- Hypothesis Testing
- Monte Carlo Simulation
- A/B testing with statistical significance
- Linear Regression
- Time series basics
- Bayesian methods
- Causal inference
- Sampling Methods
- ResearchBeginnerNew
Evaluate a Generative AI Image Tool with a Within-Subjects Study
You will write a study protocol, recruit 20 participants (a Discord callout is fine), counterbalance the two conditions, and run 45-minute sessions over Zoom. Collect three meas…
- Experiment Design
- User Study
- Within Subjects Design
Human-Computer Interaction for AI Systems - ResearchSeniorNew
Embodied Visual Reasoning for a Warehouse Pick Assistant
Use an embodied simulator (Habitat 3.0 or Isaac Sim — pick one and justify) to render 300 cluttered-bin scenarios with a target item label. For each scenario, build two reasonin…
- Embodied Vision
- Vision Language Models
- Visual Reasoning
Visual Intelligence and Visual Reasoning - DesignIntermediateNew
Design a Crisis Information-Flow Analysis for a Newsroom
Using the sampled propagation log and the editorial brief in the provided materials, design and partially demonstrate an analysis that reconstructs the alert's 72-hour spread as…
- Computational Journalism
- Temporal Networks
- Network Science
Open coursework - AnalysisFoundationalNew
Controlling Inventory for a Sustainable Fashion Brand
Your task is to develop an inventory control system for EcoThreads. You must analyze historical sales data (provided in a CSV), identify patterns, propose KPIs (e.g., turnover r…
- Inventory Management
- Data Analysis
- KPI Definition
Principles of Management Develop in-demand professional skills.
Each challenge names the skills it strengthens. Over time, your profile fills with the competences a hiring manager would actually look for.
Why Ewance
- DesignSeniorNew
Auction Design for Renewable Energy Subsidies
Your team must design an auction mechanism for allocating subsidies to offshore wind projects. You have historical bid data from past auctions, cost estimates for different tech…
- Auction Theory
- Mechanism Design
- Game Theory
Industrial Economics and Game Theory - DesignIntermediateNew
Design a Region-Routed Storage Layer for a Nordic EdTech
Working only from the materials in this file, produce a recommendation for how Lärnova should store student assignments so each country's data stays in its home region. Start by…
- Geo Distribution
- Data Residency
- Cockroachdb
Open coursework - StrategyBeginnerNew
Plot a Diversification Path for a Nairobi Skincare Brand
Using the founder's company case file, the product portfolio sales dataset, and the category attractiveness readout provided to you, run a portfolio analysis (the BCG growth-sha…
- Portfolio Analysis
- Market Research
- Strategic Thinking
Open coursework - DesignBeginnerNew
Optimizing Inventory for a São Paulo D2C Cosmetics Brand
You are given a CSV file with raw sales, inventory, and supplier data. Your task is to design an E/R diagram, create the normalized relational schema in 3NF, populate it with sa…
- SQL
- Database Design
- Normalization
Open coursework - Browse challenges
Explore role
Pricing Strategist
Set the price that captures value without leaving sales on the table. Demand modelling, willingness-to-pay research, and the disciplined experimentation that turns pricing into a competitive advantage.
- CodeIntermediateNew
Build an Anomaly-Detection Pipeline for Pharma Cold-Chain Logistics
You receive 18 months of shipment telemetry (around 60,000 shipments, around 12 million sensor readings) plus a hand-labeled set of 1,200 incidents (mix of true excursions, sens…
- Anomaly Detection
- Feature Engineering
- Time Series
Data Mining and Knowledge Discovery - ResearchIntermediateNew
Sim-to-Real Domain Randomization for a Mobile Robot
You receive an Isaac Sim navigation environment, a baseline trained policy, a 50-episode real-bench test set (recorded sensor streams + ground truth) for offline policy evaluati…
- Domain Randomization
- Sim To Real
- Robot Navigation
Open coursework - ResearchSeniorNew
Open-Vocabulary Segmentation Benchmark for a Robotics R&D Lab
Use a curated 200-image household scene set (publicly-available HM3D renderings or COCO + a handful of household prompts). Benchmark 3 open-vocabulary segmentation models: SAM +…
- Open Vocabulary Segmentation
- Vision Language Models
- Benchmarking
Computer Vision - StrategyBeginnerNew
Design a Weekly Dynamic Pricing Strategy for GlowVienna
Design a weekly dynamic pricing strategy for GlowVienna's flagship serum that the team could realistically operate. Ground your work in the three materials provided: the histori…
- Pricing Strategy
- Demand Forecasting
- Data Analysis
Open coursework Get recognized by recruiters and employers.
Credentials are blockchain-anchored via LearnCoin — tamper-evident, portable, link-shareable on LinkedIn and beyond.
Why Ewance
- ResearchSeniorNew
Neuromarketing Audit for a Sustainable Fashion Retailer
Your team will design and simulate a neuromarketing experiment. First, propose two alternative store layouts (e.g., circular vs. grid) and two website homepage designs (e.g., he…
- Neuromarketing
- Experimental Design
- Eye Tracking Analysis
Consumer Behavior - ResearchSeniorNew
Model-Based RL for a Robotic Arm Pick-Place Task
You receive a PyBullet pick-and-place environment (Franka Panda arm, 12 object types, randomized starting poses) and a SAC baseline that hits 85% success after about 1.5 million…
- Model Based Rl
- World Models
- Reinforcement Learning
Open coursework - ResearchIntermediateNew
Recommend a Color Scale for a Flood-Risk Map With Evidence
Working only from the provided materials, reach and defend a single recommendation. Read the decision file (decision-file) to understand the actors, the prior complaint, and the…
- Perceptual Study
- Color Scales
- Experimental Design
Open coursework - AnalysisFoundationalNew
Pricing Strategy for a Sustainable Fashion Brand
You are a pricing analyst at EcoWear. Using the survey data (simulated with 500 responses) and competitor prices, perform a conjoint analysis or price elasticity analysis. Deter…
- Data Analysis
- Statistics
- Data Visualization
Open coursework - StrategyBeginnerNew
Simulation-Based Customer Success Staffing Plan for Flowly
Using the historical ticket log, the growth-scenarios brief, and the current-operations and service-level specification provided to you, build a discrete-event simulation of Flo…
- Simulation
- Capacity Planning
- Scenario Analysis
Open coursework - DesignBeginnerNew
A/B-Test a Recommender Improvement Without Breaking Trust
You receive offline-evaluation results for both the production and candidate models plus aggregate metrics from the last 12 weeks (recipe views, save rate, weekly active users, …
- Experiment Design
- Ab Testing
- Metric Design
Machine Learning in Practice - AnalysisFoundationalNew
Investigate Price Sensitivity for GlowSydney's New Moisturizer
Working solo, begin by exploring the GlowSydney transaction history (provided as the dataset 'glowsydney-transactions') to summarize how prices and units sold are distributed, u…
- Descriptive Statistics
- Linear Regression
- Data Visualization
Open coursework - AnalysisIntermediateNew
Diagnose and Restart LearnLab's Stalled Math-Tutoring Sprint
Treat the squad as a field site you can study through the records it has already produced. Using only the three provided materials, build a quantitative picture and a qualitativ…
- Scrum
- Retrospective Facilitation
- Data Analysis
Open coursework - CodeSeniorNew
Grounded Language for a Robotics Pick-and-Place Demo
Use a tabletop simulator (PyBullet or Isaac Sim, both open) with 5 object types and 5 spatial relations (left of, right of, behind, in front of, on top of). Curate or generate a…
- Grounded Language Understanding
- Semantic Parsing
- Perception
Open coursework - ResearchSeniorNew
Trajectory Prediction Model for Urban Robotaxis
Use the Argoverse 2 motion-forecasting dataset (open access). Train an LSTM baseline + a transformer challenger (e.g., a small Wayformer or HiVT). Evaluate on minADE/minFDE (min…
- Trajectory Prediction
- Transformer Models
- Evaluation
Open coursework - AnalysisIntermediateNew
Map Knowledge Diffusion Across an Open-Source Project Ecosystem
Using the de-identified contributor activity export (material 1), build a temporal contributor-project network from the recorded events, then collapse it into a contributor-to-c…
- Network Science
- Temporal Networks
- Graph Analysis
Open coursework - DesignBeginnerNew
Redesign Weekly Production Scheduling for a Munich Craft Brewery
Using the historical demand dataset, the production-constraints specification, and the current-operations snapshot provided, design a single weekly production schedule for the t…
- Process Analysis
- Capacity Planning
- Scheduling
Open coursework
How it works
From brief to credential, in six steps.
Step 01
Browse challenges aligned to your studies.
Step 02
Accept the one that fits your goals.
Step 03
Work through it with AI Copilot guidance.
Step 04
Submit for structured evaluation.
Step 05
Earn a verified credential.
Step 06
Add it to LinkedIn with one click.
Industry teams behind a decade of practitioner briefs
Hiring from this pool?
Sponsor a challenge and meet candidates through actual work.
Industry teams can shape briefs around the skills they hire for, then evaluate students on rubric-scored deliverables — not resumes.



















































































