Visual Statistics Tools

Beginner

Mean Median Mode Visualizer

Calculate and visualize the mean, median, and mode of any dataset. Compare measures of central tendency and see how skewed data and outliers affect each measure.

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Beginner

Standard Deviation Visualizer

Calculate the standard deviation and variance of a dataset while visualizing how data values are distributed around the mean. Compare population and sample calculations with step-by-step results.

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Beginner

Box Plot Generator

Create box-and-whisker plots showing median, quartiles, IQR, and outliers for any dataset. Perfect for comparing distributions across groups.

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Beginner

Five Number Summary Visualizer

Calculate the minimum, first quartile (Q1), median, third quartile (Q3), and maximum for any dataset. Visualize quartiles and understand the foundation of box plots instantly.

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Beginner

Outlier Detector

Detect outliers using the IQR method and Tukey's fences. Automatically identify mild and extreme outliers, view calculation steps, and understand how unusual values affect your dataset.

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Beginner

Histogram Maker

Build frequency histograms from raw data. Adjust bin width, overlay a normal curve, and visualize skewness, kurtosis, and distribution shape instantly.

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Beginner

Frequency Distribution Table Maker

Generate grouped frequency distribution tables with class intervals, frequency, relative frequency, cumulative frequency, and percentage columns.

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Beginner

Stem and Leaf Plot Maker

Create single and back-to-back stem and leaf plots for any dataset. Automatically sorts values and displays the full distribution in a readable format.

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Beginner

Bar Chart Maker

Create vertical and horizontal bar charts for categorical data comparisons. Label axes, add titles, and download as PNG or SVG.

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Intermediate

Scatter Plot Maker

Create scatter diagrams from paired X–Y data. Optionally overlay a least-squares regression line, display Pearson r, and identify the correlation direction.

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Beginner

Pie Chart Maker

Generate pie and donut charts for proportions, survey results, and category breakdowns. Displays percentage labels and a color-coded legend.

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Beginner

Line Chart Maker

Plot time series and trend data with multi-series line charts. Supports multiple datasets, gridlines, and labeled axes for clear data storytelling.

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Beginner

Pictograph Maker

Create pictographs using customizable icons to represent data values. Perfect for classroom activities, presentations, and visually comparing categorical data.

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Intermediate

Radar Chart Maker

Build radar (spider) charts to compare multiple variables across one or more datasets. Customize axes, colors, labels, and compare performance profiles visually.

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Intermediate

Heatmap Grid Visualizer

Visualize numerical values as a color-coded heatmap grid. Identify patterns, trends, clusters, and high or low intensity values across rows and columns.

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Beginner

Ogive Graph Maker

Create cumulative frequency (ogive) graphs from grouped data. Plot less-than and greater-than ogives to visualize cumulative distributions and percentile positions.

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Intermediate

Box Plot Comparison Tool

Compare multiple box-and-whisker plots side by side. Analyze differences in medians, spread, quartiles, and outliers across several datasets.

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Beginner

Pareto Chart Maker

Generate Pareto charts with descending bars and a cumulative percentage line. Apply the 80/20 principle to identify the most significant categories.

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Beginner

Dot Plot Maker

Create dot plots from numerical data to visualize frequency, clusters, gaps, and outliers. Ideal for small to medium-sized datasets and classroom demonstrations.

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Intermediate

Rejection Region Diagram Maker

Visualize one-tailed and two-tailed rejection regions on a normal or t-distribution. Set α, critical values, and test statistic to see exactly where your result falls.

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Beginner

Bell Curve Generator

Graph any normal distribution by setting μ and σ. Shade areas under the curve, display the 68–95–99.7 rule, and export a print-ready bell curve diagram.

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Intermediate

t-Distribution Visualizer

Overlay t-distributions for different degrees of freedom and compare them to the standard normal. See how heavier tails shrink as df increases.

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Intermediate

Regression Line Scatter Plot

Enter X–Y data to plot a scatter diagram with the fitted least-squares regression line. Displays equation ŷ = b₀ + b₁x, R², and Pearson r alongside the graph.

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Beginner

Probability Tree Diagram Maker

Build multi-stage probability trees with automatic branch probability calculation. Displays all outcomes, path probabilities, and multiplication rule steps at each node.

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Intermediate

Confidence Interval Visualizer

Simulate 100 confidence intervals and see what "95% confidence" really means. Watch which intervals capture the true mean and which miss — a powerful teaching tool.

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Beginner

Z-Score to Percentile Converter

Convert any z-score to a percentile rank instantly — and reverse-convert a percentile to its z-score. Shows position on the bell curve with a shaded area diagram.

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