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
- DesignAdvancedNew
Designing a Humanitarian Supply Chain for Flood Relief in Bangladesh
As a humanitarian logistics analyst, you must develop a supply chain strategy for AidNow's flood response. Tasks include: selecting warehouse locations, choosing transportation …
- Humanitarian Logistics
- Supply Chain Design
- Risk Assessment
Logistics and Transportation Management - AnalysisIntermediateNew
Reducing Inventory Costs for a Mid-Size Electronics Manufacturer
As a supply chain analyst, you must analyze CircuitPro's inventory data (provided in a simulated dataset) and propose improvements. Tasks include: classifying inventory using AB…
- Inventory Management
- Abc Analysis
- Safety Stock
Logistics and Transportation Management - DesignAdvancedNew
Merging Engineering and Product Teams at a SaaS Scale-Up
Your task is to propose a team integration plan for DataFlow. You need to analyze the current team dynamics, identify sources of conflict, and recommend structural changes (e.g.…
- Organizational Design
- Team Dynamics
- Conflict Resolution
Leading Change and Organizational Development - DesignBeginnerNew
Digital Transformation for a Legacy Luxury Hotel
Design a digital strategy for the hotel's guest experience. Constraints: no changes to the physical property; budget of €500,000; must integrate with existing PMS. Success means…
- Customer Journey Mapping
- Digital Strategy
- Luxury Service Design
Luxury Brand 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
- CodeIntermediateNew
Predictive Churn Model for Bangalore D2C Cosmetics
You will analyze a provided dataset of 10k customers with features like purchase frequency, average order value, time since last purchase, pages visited, support tickets, and su…
- Python
- Scikit Learn
- Logistic Regression
Machine Learning and AI for Business - StrategyAdvancedNew
AI Strategy for 40-Person SaaS Moving to Enterprise
Analyze the provided dataset of 200 enterprise trials (features: number of users invited, integrations used, support tickets, time in trial, etc.) and build a lead scoring model…
- Lead Scoring
- Logistic Regression
- Ai Strategy
Machine Learning and AI for Business - CodeExpertNew
Deep Learning for Sustainable Fashion Visual Search
You are given a dataset of 10k product images (from a subset of the catalog) with metadata (category, price, material). Build a visual search pipeline: extract embeddings using …
- Deep Learning
- Computer Vision
- Cnn
Machine Learning and AI for Business - AnalysisIntermediateNew
Inflation Hedging for a Lagos D2C Cosmetics Brand
Your task is to analyze recent inflation data, Central Bank of Nigeria (CBN) monetary policy, and USD/NGN exchange rate trends. Then, propose a combination of financial instrume…
- Inflation Analysis
- Monetary Policy
- Exchange Rate Forecasting
Macroeconomics - 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.
- ResearchBeginnerNew
Business Cycle Positioning for a Renewable Energy Firm
Your task is to analyze current business cycle indicators for Italy (GDP growth, unemployment, consumer confidence, interest rates) and the specific impact on residential solar …
- Business Cycle Analysis
- Leading Indicators
- Demand Forecasting
Macroeconomics - AnalysisIntermediateNew
Cost Allocation for an Austin D2C Cosmetics Startup
You are a junior management accountant hired by GlowUp. Using provided financial data (sales, direct costs, overhead pools, and activity drivers), implement an ABC model to allo…
- Activity Based Costing
- Cost Allocation
- Profitability Analysis
Management and Cost Accounting - CodeExpertNew
Dynamic Pricing for a Renewable Energy Aggregator
Your task is to develop a dynamic pricing model for GreenGrid's electricity sales. Constraints: must account for weather-dependent generation, market price volatility, and regul…
- Dynamic Pricing
- Optimization
- Risk Management
Managerial Economics - AnalysisBeginnerNew
Cost-Volume-Profit Analysis for a Sustainable Fashion Brand
Using provided cost estimates (fixed costs €500K, variable cost per unit €25, selling price €80), perform a CVP analysis. Calculate break-even in units and revenue, margin of sa…
- Cvp Analysis
- Break Even Analysis
- Sensitivity Analysis
Managerial Accounting Get recognized by recruiters and employers.
Credentials are blockchain-anchored via LearnCoin — tamper-evident, portable, link-shareable on LinkedIn and beyond.
Why Ewance
- AnalysisBeginnerNew
Optimize Ad Spend for Munich D2C Cosmetics Brand
You are given a CSV dataset with 10,000 rows of ad performance data including date, campaign, audience segment, creative type, impressions, clicks, conversions, and spend. Your …
- A B Testing
- Regression Analysis
- Data Cleaning
Marketing Analytics - AnalysisIntermediateNew
Customer Lifetime Value Model for SaaS Scale-up
You are provided with a dataset of 5,000 customers with features: acquisition channel, monthly spend, tenure, number of support tickets, product usage metrics, and churn flag. Y…
- Customer Lifetime Value
- Predictive Modeling
- Customer Segmentation
Marketing Analytics - ResearchAdvancedNew
Conjoint Analysis for Sustainable Fashion Brand
You will design a choice-based conjoint (CBC) survey with 4 attributes (price, material, color options, warranty) each with 3-4 levels. You must collect responses from at least …
- Conjoint Analysis
- Survey Design
- Multinomial Logit
Marketing Analytics - StrategyIntermediateNew
Revitalizing a Legacy Brand for Gen Z
Develop a comprehensive marketing strategy including STP analysis, a refreshed marketing mix, and a customer lifetime value model. Deliver a 10-slide deck with key recommendatio…
- Strategic Marketing
- Segmentation Targeting Positioning
- Marketing Mix
Marketing Management - AnalysisAdvancedNew
Data-Driven Customer Segmentation for a SaaS Scale-Up
Using provided anonymized customer data (firmographics, usage patterns, and purchase history), perform cluster analysis to segment the customer base. Develop a targeting strateg…
- Customer Segmentation
- Cluster Analysis
- Data Analytics
Marketing Management - ResearchBeginnerNew
Optimizing Survey Design for a São Paulo D2C Cosmetics Brand
Your task is to design a complete survey research plan for Glow SP. Define the target population, sampling frame, and sample size. Create a 15-question survey (mix of closed and…
- Survey Design
- Sampling
- Questionnaire Construction
Marketing Research - ResearchAdvancedNew
Observational Research for a Quick-Service Restaurant Chain
Your task is to design an observational research study for BiteBox. Define key metrics (e.g., order time, wait time, accuracy). Observe a BiteBox drive-thru for 2 hours during p…
- Observational Research
- Time Motion Study
- Customer Journey Mapping
Marketing Research - StrategyIntermediateNew
Launch Strategy for a San Francisco D2C Cosmetics Startup
Your task is to create a detailed marketing launch plan for GlowSF. You must identify the most viable target segment, craft a unique value proposition, and design a marketing mi…
- Market Segmentation
- Targeting
- Positioning
Marketing Principles - ResearchBeginnerNew
Consumer Behavior Analysis for a Plant-Based Meat Alternative
Your task is to conduct a consumer behavior analysis for GreenBite's new plant-based chicken. You will design a survey (n=200), analyze results, and provide recommendations on t…
- Survey Design
- Data Analysis
- Consumer Behavior
Marketing Principles - AnalysisIntermediateNew
Acquisition of a Bangalore D2C Cosmetics Startup
As a junior M&A analyst at BeautyCo, you must assess GlowUp's business model, financials, and market position. You need to conduct a valuation using DCF and comparable company a…
- Financial Analysis
- Valuation
- Due Diligence
Mergers and Acquisitions - AnalysisIntermediateNew
Pricing Strategy for a Dublin D2C Cosmetics Startup
You are a pricing analyst for Glow Dublin. Using provided sales data, cost breakdowns, and competitor prices, estimate the price elasticity of demand for the serum. Then, recomm…
- Demand Elasticity
- Cost Analysis
- Pricing Strategy
Microeconomics - StrategyIntermediateNew
Negotiating a Strategic Alliance for a Seoul D2C Cosmetics Brand
Your task is to develop a negotiation strategy for GlowUp's founder to use in talks with the drugstore chain. You must analyze the BATNA, reservation price, and potential integr…
- Batna Analysis
- Distributive Bargaining
- Integrative Negotiation
Negotiation
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.