生産性 & ライフスタイル / 数学、簡単に。
数学 & 統計
平均/中央値/最頻値/標準偏差、変化率、ピタゴラス三角形、3D 体積、GPA、APR↔APY — r/statistics、r/learnmath、r/datascience、r/finance の「これの計算方法」スレッドに回答。
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Statistics Calculator
Compute mean, median, mode, range, variance, and standard deviation for any dataset.
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Percentage Change Calculator
See the percent change between any two numbers (with direction).
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Triangle Calculator (Sides / Area / Angles)
Solve any triangle given 3 known sides or 2 sides + 1 angle (Law of Cosines / Sines).
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3D Volume & Surface Area Calculator
Compute volume and surface area for spheres, cubes, cylinders, cones, and pyramids.
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GPA Calculator (Weighted & Unweighted)
Compute weighted and unweighted GPA on a 4.0 / 4.5 / 5.0 scale.
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APR ↔ APY Converter
Convert between APR and APY for any compounding frequency.
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