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
- AnalysisIntermediateNew
Due Diligence for a Seoul D2C Cosmetics Brand
Perform commercial due diligence: analyze customer cohorts, CAC, LTV, churn, and retention. Evaluate the brand's competitive moat (ingredients, sustainability, influencer networ…
- Commercial Due Diligence
- Customer Analytics
- Unit Economics
Private Equity - ResearchIntermediateNew
Optimizing Onboarding for a Fintech App
Your task is to analyze the current onboarding flow, identify drop-off points, and propose a redesigned onboarding experience. You will use user behavior data (provided in a sim…
- User Research
- Ux Design
- Data Analysis
Product Management - CodeIntermediateNew
Building a Customer Segmentation Tool for a SaaS Scale-up
You are provided with a JSON file containing user data: user_id, total_logins, days_since_last_login, features_used (count), subscription_tier (free/basic/premium). Your task is…
- Python
- Pandas
- Scikit Learn
Programming for Business Applications - AnalysisIntermediateNew
Reducing Defect Rate in Stockholm D2C Cosmetics Production
Your task is to collect and analyze production data (provided in a simulated dataset) to identify root causes of defects. Use control charts (X-bar and R) and process capability…
- Statistical Process Control
- Process Capability Analysis
- Root Cause Analysis
Quality and Productivity Management Practice your coursework on real scenarios.
Every challenge is shaped from real industry context — not generic exercises. The work mirrors what your degree prepares you for.
Why Ewance
- DesignIntermediateNew
Smart Service Design for Urban Mobility
You are a service designer at EcoRide. Your task is to design a smart subscription service called 'EcoRide+'. Define the service concept, key features, data sources, and revenue…
- Service Design
- Customer Journey Mapping
- Service Blueprint
Smart Services and Digital Products - AnalysisIntermediateNew
Impact Measurement for a San Francisco D2C Cosmetics Brand
Your task is to develop a comprehensive impact measurement framework for GlowRoot. You will identify relevant metrics (e.g., carbon footprint reduction, trees planted, customer …
- Impact Measurement
- Social Return On Investment
- Data Analysis
Social Entrepreneurship and Impact - AnalysisIntermediateNew
Optimizing TikTok Ad Creative for a D2C Cosmetics Brand
You are a marketing analyst at GlowUp. Using the TikTok Ads Library API and web scraping, collect data on at least 50 ad creatives (video thumbnails, captions, CTAs, and perform…
- Web Scraping
- Content Analysis
- Data Visualization
Social Media and Web Analytics - CodeIntermediateNew
Sentiment Analysis of Product Launch on Reddit
You are a social media analyst at EcoWear. Using Reddit's API, collect all posts and comments from r/sustainablefashion, r/sneakers, and r/environment for one week before and af…
- Web Scraping
- Sentiment Analysis
- Topic Modeling
Social Media and Web Analytics - Browse challenges
Explore role
Product Manager
Ship product that solves real user problems. Combine user research, prototyping, and stakeholder alignment to turn ambiguous briefs into measurable wins — the role at the centre of modern software teams.
- CodeIntermediateNew
Optimizing Inventory for a Milan D2C Cosmetics Brand
You are provided with 12 months of daily sales data for 10 SKUs, including unit price, cost, lead time, and current inventory. Your task is to develop an Excel-based inventory o…
- Excel Modeling
- Vba Programming
- Demand Forecasting
Spreadsheet Modeling and VBA - DesignIntermediateNew
Pricing Optimization for a Sustainable Fashion Brand
You are provided with historical sales data for similar products, including price, quantity sold, and cost. For each new product, you have estimated demand curves (linear or con…
- Excel Modeling
- Vba Programming
- Optimization
Spreadsheet Modeling and VBA - AnalysisIntermediateNew
A/B Test Landing Page for a 40-Person SaaS Scale-Up
You are a marketing analyst at TaskFlow. You have a dataset of 10,000 visitors with columns: group (control/variant), converted (yes/no), time on page (seconds), and device type…
- Hypothesis Testing
- A B Testing
- Chi Square Test
Statistics for Business - StrategyIntermediateNew
Revitalizing a Legacy Retailer's Digital Strategy
Your task is to conduct an industry analysis using Porter's Five Forces, assess the company's internal resources via a VRIO framework, and develop a strategic recommendation for…
- Industry Analysis
- Competitive Strategy
- Digital Transformation
Strategic Management Build a verifiable portfolio.
Submissions become evidence. Reviewers with shipping experience score against a rubric; the result becomes a credential anyone can verify.
Why Ewance
- StrategyIntermediateNew
Talent Retention Strategy for a Paris D2C Cosmetics Startup
Your task is to analyze the root causes of turnover using exit interviews and engagement survey data (provided in a simulated dataset), then propose a retention strategy with 3-…
- Talent Retention
- Hr Analytics
- Strategic Hrm
Strategic Human Resource Management - StrategyIntermediateNew
Diversification Strategy for a Regional Brewery Chain
Your task is to identify and evaluate three diversification opportunities for Prairie Brews: (1) launching a line of non-alcoholic craft beverages, (2) opening a chain of beer-t…
- Diversification Analysis
- Financial Modeling
- Market Research
Strategic Management (Graduate) - AnalysisIntermediateNew
Optimizing Last-Mile Delivery for a New York D2C Cosmetics Brand
Your task is to evaluate the startup's current last-mile delivery operations using the SCOR model and propose improvements. Constraints: no capital expenditure for a private fle…
- Supply Chain Analysis
- Scor Model
- Logistics Optimization
Supply Chain Management - AnalysisIntermediateNew
ESG Integration for a San Francisco D2C Cosmetics Brand
Your task is to develop a lightweight ESG integration framework for the startup. Deliver a materiality matrix, a set of 5-7 key ESG indicators, a scoring methodology, and a one-…
- Esg Scoring
- Materiality Assessment
- Sasb Standards
Sustainable Finance and Impact Investing - AnalysisIntermediateNew
Greening the Munich D2C Cosmetics Supply Chain
Your task is to conduct a life cycle assessment (LCA) of Glow Naturals' best-selling moisturizer, identify the biggest environmental hotspots, and recommend changes in sourcing,…
- Life Cycle Assessment
- Circular Economy
- Supply Chain Analysis
Sustainability and Sustainable Business - AnalysisIntermediateNew
Topic Modeling for Sustainable Fashion Brand's Social Media
You are given a dataset of 50,000 social media posts (text only) mentioning EcoWear. Your task is to preprocess the text, apply an unsupervised topic modeling technique (e.g., L…
- Topic Modeling
- Text Mining
- Lda
Text Analytics and Natural Language Processing - AnalysisIntermediateNew
Tax-Efficient Legal Form for a Nairobi D2C Cosmetics Startup
Students will receive financial projections for GlowUp Naturals (KES 50 million revenue, KES 35 million expenses, projected growth to KES 200 million in 3 years). They must calc…
- Income Tax Calculation
- Corporate Tax
- Trade Tax
Business Taxation - AnalysisIntermediateNew
Valuing a Johannesburg D2C Cosmetics Startup
Conduct a valuation of GlowUp using the Venture Capital Method, Scorecard Method, and a comparable transactions analysis. Assume a target return of 10x and a 70% probability of …
- Startup Valuation
- Term Sheet Analysis
- Financial Modeling
Venture Capital and Entrepreneurial Finance - DesignIntermediateNew
Mobile App for Lagos D2C Cosmetics Brand
You are tasked with designing and prototyping an Android app for GlowLagos. The app must include a product catalog with search and filter, product detail pages with ingredient l…
- Android Design
- Ui Ux
- Figma
Web and Mobile Application Development
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.