| Harold's Cheat Sheets | ||
| Harold's Statistics: Descriptive Cheat Sheet | Docx | My AP Stats formulas with mean, variance, and statistical inference (SNHU MAT243) |
| Harold's Statistics: Distributions Cheat Sheet | Docx | My discrete and continuous Probability Distribution Functions (PDFs) (SNHU MAT243) |
| Harold's Statistics: Discrete Distributions Cheat Sheet | Docx | My discrete Probability Distribution Functions (PDFs) |
| Harold's Probability Cheat Sheet | Docx | My compilation of common probability formulas (SNHU MAT243 & MAT 230 Modules 3 & 4) |
| Harold's Statistics: Hypothesis Testing Cheat Sheet | Docx | My Hypothesis Testing made simple (SNHU MAT243) |
| Harold's Statistics: Linear Regression Analysis Cheat Sheet | Docx | My simple and multiple linear regression models (SNHU MAT243) |
| Harold's Statistics: ANOVA and Chi Squared Cheat Sheet | Docx | My analysis of variance (ANOVA) and chi squared tests (SNHU MAT243) |
| AP Stats Formulas | ||
| AP Stats Formulas | AP Statistics formula sheets | |
| BarCharts QuickStudy Guide | ||
| Very useful statistics cheat sheet | ||
| Stats sample problems with solutions | ||
| Textbooks | Link | Free Open-Source Textbooks |
| Statistics | Link | OpenStax free open-source textbook - Statistics |
| Introductory Statistics | Link | OpenStax free open-source textbook - Introductory Statistics |
| Introductory Business Statistics | Link | OpenStax free open-source textbook - Introductory Business Statistics |
| AP | Advanced Placement (AP) | |
| AP Practice Exams - Statistics | College Board - Statistics (2001-2016) | |
| AP Practice Exams - Statistics - 2001 - 2024 ZIP File | College Board - AP Statistics Exams (2001-2024) ZIP File (50 MB) | |
| Links | ||
| WolframAlpha.com | Computational Knowledge Engine | |
| Distribution Formulas | <Link> | Well organized distribution formulas (PDF) |
| Important Statistics Formulas | Well organized statistics formulas | |
| Statistic Calculators | ~100 different stats calculators all on one page | |
| iPad Apps | Apple's App Store | |
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Statistics 1 | Statistics |
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Math Ref | Best Math, Physics, and Chemistry Formulas |
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WolframAlpha | The Google of Mathematics |
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Last updated 4 March 2025