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Bayesian Statistics Calculator

Learn how beliefs update with evidence - like weather forecasts improving with new data! Perfect for beginners.

Choose Your Level

πŸ€” What Is Bayesian Statistics?

Think of weather forecasts updating with new data - that's Bayesian thinking!

It's a method that updates your beliefs when you get new evidence, helping make better decisions in uncertain situations.

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Spam Filters
Gmail uses this to catch 99.9% of spam
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Medical Diagnosis
Doctors update diagnoses with test results
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A/B Testing
Companies test which design works better
🎬
Netflix Recommendations
Learns your taste with each show you watch
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Weather Forecasting
Predictions improve with new sensor data
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Search Engines
Results improve based on click patterns

πŸš€ Quick Scenarios

🎯 Basic Settings

Prior Belief 50%
Evidence Strength 70%
75.8%
Updated Probability (Posterior)

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Welcome to Bayesian Calculator!

First time here? Perfect!

In just 3 minutes, you'll understand how spam filters work, medical tests are interpreted, and Netflix recommends shows!

No math degree needed - we'll use real examples you already know!

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πŸ€– Choose Your AI Assistant

πŸ’¬ ChatGPT
Most versatile β€’ Best for general Bayesian questions
🧠 Claude
Best reasoning β€’ Perfect for complex probability analysis
✨ Gemini FREE
Free daily limits β€’ Built-in Bayesian help