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
· Data Analysis Clear- All
- Data Analysis
- Experimental design
- Simulation
- Exploratory Data Analysis
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- 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
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Channel Partner Program for a Munich Industrial Sensor Manufacturer
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Mobile Marketing Strategy for a Food Delivery App
Develop a mobile marketing strategy for QuickBite to improve user retention. Analyze provided user behavior data (e.g., session frequency, order history) to segment users. Desig…
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Digital Marketing 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
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Computational Newsroom: Analyze Crisis Information Flow on Social Platforms
Receive an anonymized 72-hour dataset of posts, reposts, quotes, and replies (10M events) tagged to the public-health alert. Build a temporal repost-and-reply network at minute …
- Computational Journalism
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Network Science and Computational Social Science - StrategyBeginnerNew
Diversification Strategy for a Nairobi D2C Cosmetics Brand
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- Portfolio Analysis
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Corporate Strategy - AnalysisFoundationalNew
Customer Experience Analysis for a D2C Cosmetics Brand
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Forecasting Churn for a SaaS Scale-Up
You are a data scientist intern at TaskFlow. Using the provided dataset, perform feature engineering and build a logistic regression or decision tree model to predict churn. Ide…
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- Regression
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Data Analytics for Business - 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.
- DesignBeginnerNew
Simulation-Based Capacity Planning for a 40-Person SaaS Scale-Up
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Optimizing Inventory for a Barcelona D2C Cosmetics Brand
You are given a CSV file with 6 months of daily sales data for 20 SKUs, including product name, date, units sold, and current stock level. Your task is to write a Python program…
- Python Or Javascript
- Data Cleaning
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Programming for Business Applications - AnalysisIntermediateNew
Resilience Analysis of a National Power-Distribution Network
Receive an anonymized topology of the medium-voltage network (4,200 nodes, 4,800 edges, each edge with capacity + age + redundancy flag). Build the network in NetworkX, compute …
- Network Science
- Graph Analysis
- Resilience Analysis
Network Science and Computational Social Science - StrategyBeginnerNew
Revamping Loyalty for a Mexico City D2C Cosmetics Brand
You are hired as a marketing analyst. Analyze Brillo Natural's existing customer data (provided in a simulated dataset) to identify purchase patterns and decision triggers. Prop…
- Consumer Psychology
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Consumer Behavior 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
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Optimizing Last-Mile Delivery for a New York D2C Cosmetics Brand
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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 - StrategyIntermediateNew
Rebuilding Trust After a Toxic Culture Scandal
Your task is to produce a comprehensive culture transformation proposal. Success means presenting a plan that addresses psychological safety, leadership accountability, and incl…
- Organizational Culture Diagnosis
- Change Management
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Pricing Strategy for a Copenhagen D2C Cosmetics Startup
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- Game Theory
- Pricing Strategy & Elasticity
- Market Analysis
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Optimizing Last-Mile Delivery for a San Francisco Grocery Startup
Your task is to formulate a minimum-cost flow problem for daily delivery routes. Use the provided order data (locations, time windows, volumes) and vehicle specs (capacity, spee…
- Linear Programming
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Detect Coordinated Inauthentic Behavior on a National News Platform
Receive an anonymized 90-day export of comments (user_id, article_id, timestamp, like_count, reply_to_id) and basic user metadata (registration date, login pattern bucket). Buil…
- Network Science
- Community Detection
- Graph Analysis
Network Science and Computational Social Science - ResearchFoundationalNew
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
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- Consumer Behavior
Marketing Principles - 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
Data Analytics for Business - CodeBeginnerNew
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…
- Spreadsheet Modeling
- Vba Programming
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Optimizing Last-Mile Delivery for a Mumbai D2C Cosmetics Brand
Your task is to analyze Glow Naturals' current delivery data (provided in a simulated dataset) and design an optimized last-mile delivery strategy. You must consider factors lik…
- Route Optimization
- Cost Benefit Analysis
- Supply Chain Design
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Testing Market Efficiency in European Tech IPOs
Your task is to collect daily stock prices for 30 European tech IPOs from the first 60 trading days post-listing. Compute cumulative abnormal returns (CAR) using a market model …
- Event Study
- Abnormal Returns
- Market Model
Investments and Asset Pricing - CodeBeginnerNew
Optimizing Last-Mile Delivery for a Lisbon Grocery Startup
Your task is to build a linear programming model (or heuristic) to assign orders to vehicles and sequence deliveries. Success means reducing average route length by at least 15%…
- Linear Programming
- Python Or Javascript
- Route Optimization
Operations Analytics and Optimization
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.



















































































