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
- AnalysisIntermediateNew
Social Preferences in a 40-Person SaaS Scale-Up
You are an internal behavioral economist at TaskFlow. Analyze the current compensation structure (50% base, 50% individual commission) and its behavioral pitfalls. Propose a new…
- Incentive Design
- Game Theory
- Social Preferences
Open coursework - AnalysisIntermediateNew
Go-to-Market Strategy for a B2B SaaS Scale-up
You are a strategy consultant for TaskFlow. The company currently has 2000 self-serve customers (average $500/yr) and wants to target enterprise accounts (average $50k/yr). You …
- Decision Analysis
- Value Of Information
- Monte Carlo Simulation
Decision Analysis under Uncertainty - ResearchSeniorNew
Quantify Sim-to-Real Gap for a Warehouse Manipulation Policy
You receive a trained pick-and-place policy (PyTorch), the simulation env (Isaac Lab), and access to a real-arm rig (or recorded teleop episodes if hardware is unavailable). Def…
- Sim To Real
- Manipulation
- Experiment Design
Open coursework - StrategyFoundationalNew
Restructure GreenMart's Store Sales Force to Lift Upselling
Using the provided transaction-level sales export, the staff roster and turnover record, and the store-visit field notes, build a sales force restructuring plan for GreenMart's …
- Sales Force Analysis
- Incentive Design
- Training Program Design
Open coursework 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
- CodeBeginnerNew
Calibrate a Demand Forecast with Bayesian Confidence Intervals
You receive 24 months of weekly demand for 600 SKUs plus the existing XGBoost point predictions. Fit a Bayesian conformal-prediction layer (or, alternatively, a Gaussian-Process…
- Bayesian Inference
- Uncertainty Quantification
- Conformal Prediction
Probabilistic Machine Learning - AnalysisIntermediateNew
Pivot or Persevere for a Food-Tech Startup
Your team has one week to analyze provided customer data (acquisition channels, churn rates, unit economics) and market research on the B2B office food market. Deliver a recomme…
- Data Analysis
- Unit Economics
- Business Model Canvas
Open coursework - StrategyFoundationalNew
Plan GlowLisboa's Competitive Response to a Price War
Working from the company snapshot and the competitor and market readout provided to you, build a structured competitive assessment of GlowLisboa and recommend one strategic move…
- Industry Analysis
- Competitor Profiling
- Strategic Thinking
Open coursework - AnalysisFoundationalNew
Set Revenue-Maximizing Prices for Glow Naturals Skincare
Using only the Glow Naturals daily sales record (provided_materials: glow-sales-history) and the executive's framing note (provided_materials: ceo-pricing-brief), prepare and an…
- Linear Regression
- Hypothesis Testing
- Data Cleaning
Open coursework - Browse challenges
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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.
- 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 - ResearchSeniorNew
Benchmark Reward-from-Feedback Methods on a Tabletop Pick-Place
You will use a Franka Panda arm in PyBullet on a 4-object pick-and-place task. For each of the three feedback methods, train a reward model and a downstream policy until converg…
- Reinforcement Learning
- Reward Learning
- Preference Comparison
Human-Robot Interaction - CodeIntermediateNew
Prescriptive Route Optimization for a Sustainable Fashion Logistics Firm
Your team must develop a decision-support tool that recommends optimal delivery routes for EcoThreads' fleet. You'll need to model the logistics network, incorporate constraints…
- Optimization
- Simulation
- Route Planning
Business Analytics - ResearchFoundationalNew
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
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
- 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 - AnalysisIntermediateNew
Channel Partner Program for a Munich Industrial Sensor Manufacturer
Your task is to create a new channel partner program. You will analyze sales data from the past 2 years (provided in a CSV with 10,000 transactions) to identify top-performing p…
- B2B Marketing
- Channel Management
- Data Analysis
Open coursework - AnalysisIntermediateNew
Forecast TaskFlow's Recurring Revenue Through Its Enterprise Pivot
Investigate only the three TaskFlow records provided plus the public methodology reference: the self-serve subscription history (self_serve_mrr), the enterprise sales pipeline (…
- Excel Modeling
- Vba Programming
- Monte Carlo Simulation
Open coursework - StrategyIntermediateNew
Lead-Scoring Model and AI Roadmap for an Enterprise-Bound SaaS Firm
Using the Enterprise Trial History dataset, build a binary classification model that predicts whether an enterprise trial converted to a paid contract. The model must be explain…
- Lead Scoring
- Logistic Regression
- Ai Strategy
Open coursework - AnalysisIntermediateNew
Decarbonizing a 40-Person SaaS Scale-Up's Supply Chain
As a carbon management analyst, you must quantify CloudSync's current carbon footprint (Scope 1, 2, 3), identify reduction levers, and propose a roadmap to carbon neutrality. Co…
- Carbon Footprinting
- Scope 3 Emissions
- Renewable Energy
Open coursework - CodeBeginnerNew
Optimize Wind-Turbine Layout with a Genetic Algorithm
You receive a wind-speed-and-direction time series for the lease area, the polygon boundary, a minimum inter-turbine spacing constraint, and a Jensen wake model. Implement a rea…
- Genetic Algorithms
- Metaheuristics
- Constraint Handling
Open coursework - ResearchSeniorNew
Train a Small Diffusion Model for Synthetic Defect Generation
You receive 2,000 labeled defect images and 18,000 clean weld images. Train a small class-conditional latent diffusion model on the defect images (Hugging Face diffusers is fine…
- Generative Perception
- Diffusion Models
- Data Augmentation
Open coursework - ResearchIntermediateNew
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
Open coursework - ResearchSeniorNew
Pre-Register and Run a Small Neural-Network Ablation Study
You will study how three architectural and regularization choices (depth: 2/4/8 hidden layers; activation: ReLU vs. GELU; weight decay: 0 / 1e-4 / 1e-3) affect a small MLP's tes…
- Neural Networks
- Regularization
- Experiment Design
Open coursework - AnalysisIntermediateNew
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
Open coursework - ResearchSeniorNew
Reproduce a Mechanistic Interpretability Result on a Small Transformer
Pick a published mechanistic-interpretability paper that operates on a small (under 1 billion parameter) open-source transformer (e.g., GPT-2 small, Pythia 70M). Set up the envi…
- Mechanistic Interpretability
- Transformer Internals
- Pytorch
AI Safety and Alignment - 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
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.
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