Data Sciences Challenges
Explore data science challenges on Ewance to build skills employers expect from analysts and ML engineers. Work through challenges on data cleaning, exploratory analysis, modeling, and storytelling with data.
Most Popular
- AnalysisSeniorNew
Stochastic Inventory Policy for a Sustainable Fashion Brand
Using historical demand data (provided), fit a demand distribution and determine optimal (s, S) or (R, Q) policy parameters. Consider perishability (seasonal collections) and a …
- Inventory Optimization
- Stochastic Modeling
- Simulation
Open coursework - StrategySeniorNew
Shifting Organizational Culture at a 200-Person Manufacturing Firm
Your team will conduct a cultural assessment using surveys and interviews (simulated data provided). You will map the current and desired culture on the Competing Values Framewo…
- Organizational Culture
- Change Management
- Leadership Development
Organizational Behavior - DesignSeniorNew
Design a Fair-Pricing Auction for a Renewable Energy Certificate Marketplace
Using the GreenCert market context brief and the European certificate-system reference for the regulatory and product backdrop, design an auction that clears trades in this cert…
- Auction Theory
- Mechanism Design
- Market Design
Open coursework - AnalysisSeniorNew
Process Mining for Order-to-Cash in a Mid-Size Manufacturing Firm
Your task is to analyze the provided event log using process mining software (e.g., Disco, Celonis, or ProM). Discover the as-is process model, identify bottlenecks, rework loop…
- Process Mining
- Event Log Analysis
- Bpmn Modeling
Business Process 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
- AnalysisSeniorNew
Feasibility Study: On-Demand 3D-Printed Spare Parts for Wind Turbines
Working only from the materials provided — the WindServ maintenance case file (CF-1), the spare-parts demand and lead-time log (DS-1), the additive-manufacturing costing referen…
- Additive Manufacturing
- Supply Chain Design
- Cost Analysis
Open coursework - AnalysisSeniorNew
Carbon Tax Impact on a Spanish Solar Farm
Calculate the current LCOE for the solar farm (including subsidies) and compare it to a representative gas plant. Then, model the effect of the carbon tax on both technologies, …
- Carbon Tax
- Lcoe Modeling
- Energy Markets
Open coursework - StrategySeniorNew
Designing a Six Sigma Project for a Renewable Energy Manufacturer
You are given historical warranty data and production process maps. Your task is to create a comprehensive Six Sigma project charter including a problem statement, goal statemen…
- Six Sigma
- Dmaic
- Measurement System Analysis
Quality and Productivity Management - StrategySeniorNew
Service Quality Improvement for a Regional Hospital Chain
Your task is to conduct a gap analysis using SERVQUAL dimensions (reliability, responsiveness, assurance, empathy, tangibles) based on patient survey data (provided). Identify t…
- Service Quality
- Servqual
- Process Improvement
Open coursework - Browse challenges
Explore role
Strategy Analyst
Frame the business question, model the options, build the recommendation. From market sizing to competitive analysis, this role is where strategy consulting meets in-house decision-making.
- AnalysisSeniorNew
Hybrid Legal Structure for a US-Based Benefit Corporation
Your task is to research and recommend a legal structure for EcoThread. Analyze the pros and cons of benefit corporation, L3C, and hybrid models (e.g., for-profit with a nonprof…
- Legal Structures
- Benefit Corporation
- Social Enterprise Law
Social Entrepreneurship and Impact - AnalysisSeniorNew
Social Listening for a B2B SaaS Brand Reputation
Your task is to perform a social listening analysis for CloudSync over the past 3 months. Constraints: use only free or trial versions of tools (e.g., Brandwatch, Talkwalker, or…
- Social Listening
- Sentiment Analysis
- Reputation Management
Social Media Marketing - StrategySeniorNew
Build an Impact Measurement Framework for a €10M Green Bond
Working only from the materials provided, design a complete impact measurement framework for Helios Grid Software's green bond. Examine the company dossier (HELIOS-DOSSIER) to u…
- Green Bond Principles
- EU Taxonomy
- Impact Kpis
Open coursework - StrategySeniorNew
Assess ESG Integration in a Family Office Portfolio
Analyze the current portfolio's ESG ratings using MSCI or Sustainalytics data (provided). Identify sectors with high carbon footprint and poor social scores. Recommend a new ass…
- ESG Integration
- Portfolio Optimization
- Impact Measurement
Wealth Management Get recognized by recruiters and employers.
Credentials are blockchain-anchored via LearnCoin — tamper-evident, portable, link-shareable on LinkedIn and beyond.
Why Ewance
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.