Statistics Tools
Calculators and guides for data analysis and descriptive statistics
Our statistics tools help you analyse datasets instantly, with step-by-step breakdowns and plain-English explanations. From summary statistics to conceptual guides on mean, median, and standard deviation — each tool is interactive and built for clarity.
Statistics Calculator
Calculate mean, median, mode, standard deviation, variance, min, max, and range for any dataset. Paste comma-separated values and get instant results with formulas.
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What Is the Mean?
Learn what the arithmetic mean is, how to calculate it step by step, when to use it, and why outliers can distort it.
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What Is the Median?
Understand the median: how to find it for odd and even datasets, why it resists outliers, and when to prefer it over the mean.
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What Is the Mode?
Explore the mode: definition, examples of unimodal, bimodal, and multimodal datasets, and when to use it.
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Standard Deviation Explained
Understand standard deviation and variance: formulas, step-by-step calculation, the 68–95–99.7 rule, and population vs sample formulas.
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Mean vs Median: Which to Use?
Compare mean and median: how skewed distributions and outliers affect each indicator, with a decision guide and comparison table.
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