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.
Statistics & Probability Calculators
8+ 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.
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.
Normal Distribution Calculator – PDF, CDF & Z Probabilities
Explore the normal distribution: compute probability density, cumulative probability, and tail probabilities for a given z-score or x value with interactive plot.
Histogram Generator – Bins & Frequency Distribution Online
Turn a list of numbers into a histogram. Choose the number of bins or let the tool auto-calculate using Sturges' rule. Visualize your data distribution instantly.
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.