Statistical Tools
Accepts comma, space, newline, semicolon, tab, or pipe-separated values.
Count (n)
Sum
Minimum
Maximum
Range
max − min
Midrange
(min + max) / 2
Mean (arithmetic)
Median
Mode(s)
Sample variance
s² (n−1 denominator)
Pop. variance
σ² (n denominator)
Sample std dev
s
Pop. std dev
σ
Coeff. of variation
s / mean (relative spread)
MAD
Median absolute deviation
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A comprehensive statistical calculator with four analysis tabs. Descriptive tab: Count, Sum, Min, Max, Range, Midrange, Mean (arithmetic), Median, Mode(s), Sample and Population Variance, Sample and Population Standard Deviation, Coefficient of Variation, and MAD (Median Absolute Deviation). Percentiles tab: Q1 / Q2 / Q3 / IQR; a full percentile table from P5 to P99; outlier detection using the 1.5×IQR rule (Tukey fences); and optional Z-score table for each data point. Distribution tab: Skewness (Joanes & Gill sample skewness) with plain-English interpretation (symmetric / right-skewed / left-skewed), Excess Kurtosis (sample Fisher) with mesokurtic / leptokurtic / platykurtic classification, an ASCII frequency histogram with 10 bins, and sorted data display. Correlation tab: requires two datasets of any length - uses the first n = min(len1, len2) pairs; shows Pearson r (linear), Spearman ρ (rank-based), R² coefficient of determination, and side-by-side summary stats. Input parsing: auto-detects commas, spaces, newlines, semicolons, tabs, and pipe delimiters. Results copy to clipboard. Sample data pre-loaded. 100% browser-based.
How to Use
- 1Paste or type your data into the input box - any delimiter works (comma, space, newline, tab, pipe)
- 2Switch to the Descriptive tab to see mean, median, mode, standard deviation, and more
- 3Open the Percentiles tab for Q1/Q2/Q3, IQR, outlier detection, and a full P5–P99 table
- 4Check the Distribution tab for skewness, kurtosis, and a frequency histogram
- 5Use the Correlation tab by pasting a second dataset to compute Pearson r and Spearman ρ
- 6Click any result value to copy it to the clipboard
- 7Click Reset to clear the data and start fresh
Features
- Descriptive stats: count, sum, min, max, range, mean, median, mode, variance, std dev, CV, MAD
- Percentiles tab: Q1/Q2/Q3, IQR, full P5–P99 table, outlier detection (Tukey fences), Z-scores
- Distribution tab: skewness (sample Joanes–Gill), kurtosis (Fisher excess), ASCII histogram
- Correlation tab: Pearson r, Spearman ρ, R², and paired-dataset summary stats
- Auto-detects input delimiters: comma, space, newline, semicolon, tab, pipe
- Pre-loaded sample data for instant exploration
- Copy any result to clipboard with one click
- 100% browser-based - all calculations run in JavaScript
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