26 lines
630 B
Markdown
26 lines
630 B
Markdown
---
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title: "Power Analysis"
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type: concept
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tags: [statistics, experimentation]
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sources: [project-management-experiment-tracker]
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last_updated: 2026-04-20
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---
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## Definition
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Power Analysis estimates the sample size needed to detect a meaningful effect with a desired probability of success.
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## Core Principles
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- Specify minimum detectable effect
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- Choose desired power level before launch
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- Use realistic baseline rates and variance estimates
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- Recompute when the experiment design changes
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## Related Concepts
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- [[Hypothesis Testing]]
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- [[Statistical Significance]]
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- [[A/B Testing]]
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## Related Entities
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- [[Experiment Tracker]]
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