UD5 Toolkit
Box Plot Generator – Five-Number Summary & Outliers
Generate a box-and-whisker plot from your dataset. Automatically computes min, Q1, median, Q3, max, and identifies potential outliers for statistical analysis.
Tag: Statistical Calculator
14+ toolsLinear Regression Calculator – Least Squares & Trend Line
Fit a linear regression model to your X,Y data. Outputs the slope, intercept, R² value, and predicts Y for any X. Perfect for basic data analysis.
Standard Deviation Calculator – Population & Sample
Compute standard deviation and variance for a dataset, automatically distinguishing between population and sample. See mean, sum of squares, and histogram.
Scatter Plot Generator – Interactive X,Y Data Graphing
Create an interactive scatter plot from your own data. Add points, adjust axes, and see the trend line — all done locally in your browser with SVG/Canvas.
Z-Score Calculator – Standardize Your Data Point
Find the z-score of a raw value given the population mean and standard deviation. Also computes the p-value and percentile for the normal distribution.
Variance Calculator – σ² and s² Online for Dataset
Calculate the population and sample variance of a set of numbers. Shows the squared deviations and helps understand data dispersion quickly.
Bayes' Theorem Updater – Online Simple Probability Tool
Enter prior, likelihood, and marginal to compute posterior probability. Intuitive sliders for learning.
Coin Toss Probability Demonstrator – Online Long‑Run Simulator
Virtual flip coins thousands of times and see the heads/tails ratio converge to 50%. Interactive law of large numbers.
A/B Test Significance Calculator - Online Simple Stats Tool
Check if your A/B test results are statistically significant using chi-squared test. Enter visitors & conversions for control/variant. Results in plain English.
Error Function (erf) Calculator - Online Statistics & Physics
Compute the error function and complementary error function for any real x. Quick and precise. Pure frontend math.
Confidence Interval Calculator - Online Mean & Proportion
Compute confidence intervals for a population mean (known/unknown sigma) and proportion. All popular Z/T values. Local.
Coin Toss History & Statistics - Online Fairness Tracker
Flip a coin and track your full history. See percentage of heads/tails and longest streak. Pure RNG, no bias.
Dice Roll Simulator & Stats - Online Massive Roll Trials
Roll any number of dice thousands of times and see a live bar chart of the sum distribution. Great for game designers.
PRNG Validator - Online Check Randomness Pattern
Paste a list of numbers to visually check uniformity, mean, and simple pattern analysis. Educational tool for statistics and RNG.