Tools & Simulation library
Practice data, AI, analytics, and technical decisions.
SQL Practice Simulator
Practice joins, filters, grouping, ordering, and aggregate analysis on local business datasets.
What users learn
Relational tables
Joins and aggregates
Result interpretation
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BI Simulator
Work through KPI, data-source, quality, visual, and executive briefing decisions.
What users learn
KPI analysis
Source quality
Dashboard judgment
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Python Simulator
Run Python, NumPy, and Pandas examples in the browser with Pyodide.
What users learn
Python basics
NumPy arrays
Pandas grouping
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Machine Learning Simulator
Tune thresholds, inspect predictions, and compare precision, recall, F1, and confusion matrix outcomes.
What users learn
Threshold tuning
Model metrics
False positive tradeoffs
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Data Analytics Simulator
Clean messy records, calculate KPIs, group segments, inspect charts, and write analyst notes.
What users learn
Data cleaning
KPI calculation
Segment analysis
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RAG Knowledge Base Simulator
Tune chunking, overlap, top-k, and score thresholds while inspecting retrieved context and answer quality.
What users learn
Chunking
Retrieval quality
Grounded answers
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Good to know: Simulator notes, snippets, and saved runs use browser localStorage. They are not saved to a backend database or synced across devices.