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A chi-square (χ2) statistic is a test that is used to measure how expectations compare to actual observed data or model results.

Discover the types of digital currencies, their characteristics, advantages, and drawbacks. Explore how they lower transaction costs and their potential future uses.

OpenAI has updated its Codex AI coding agent with a new VS Code extension, GPT-5 power, and automated GitHub pull request reviews for a unified developer experience.