- Normal Distribution Калькулятор — PDF/CDF/Quantile & Z-Score
Enter a mean and standard deviation to compute PDF, CDF (one- and two-tailed), quantiles, interval probabilities, and z-scores with step-by-step explanations, a shaded normal curve, shareable URLs, and teacher notes.
- Descriptive Statistics + Box Plot & Histogram (with steps)
Paste a dataset or upload CSV/TSV to review descriptive statistics, histogram, box plot, outlier counts, trimmed mean, CSV export, LaTeX summary, and documented steps.
- Показник відхилення (T-показник) і калькулятор процентиля | CalcBE
Обчислити z-оцінка, deviation score (T-score / hensachi), and percentile. Підтримує введення із середнього значення та стандартного відхилення або зі списку балів/таблиці частот.
- Standard Калькулятор (History & Memory)
Perform four‑function math with parentheses and percent, a running tape, and memory slots—fully keyboard accessible, with a shareable result link.
- 2D Geometry Калькулятор (Area & Perimeter: Rectangle, Circle, Triangle, Trapezoid, Regular Polygon)
Quickly compute area and perimeter for rectangles, circles, triangles, trapezoids, and regular polygons.
- 2D Graphing Калькулятор — plot up to 3 functions with intersection & extrema steps
Plot up to three functions, detect x-intercepts, intersections, and extrema via bisection and numeric derivatives. Includes zoom, pan, shareable URLs, and transparent step logs.