5-Number Summary Calculator
Calculate the five-number summary (min, Q1, median, Q3, max) with IQR, outlier detection, box plot visualization, decile table, and Bowley skewness for any dataset.
Free Descriptive Calculators
22 toolsMean, median, mode, range, variance, and standard deviation calculators. Browse our free descriptive tools below — no sign-up required.
Ascending Order Calculator
Sort numbers in ascending or descending order with ranks, percentile ranks, gap analysis, frequency counts, and number line visualization. Handles ties with average ranking.
Box Plot Calculator
Generate box-and-whisker plots with five-number summary, Tukey fences, outlier detection, percentile table, and Bowley skewness. Interactive SVG visualization.
Coefficient of Variation Calculator
Calculate the coefficient of variation (CV) for one or two datasets, with comparison mode, CV gauge, reference table, and detailed calculation steps.
Covariance Calculator
Calculate covariance, Pearson correlation, R², and regression line for paired data. Includes scatter plot, cross-product table, and correlation gauge.
First Quartile (Q1) Calculator
Calculate the first quartile (Q1, 25th percentile) with three methods: inclusive, exclusive, and interpolated. Compare methods, view percentile table, and sorted data.
Frequency Distribution Calculator
Build grouped and ungrouped frequency distribution tables with histograms, cumulative frequencies, relative frequencies, and class count rule comparison.
Frequency Polygon Calculator
Create frequency polygons with SVG visualization, cumulative ogive overlay, class frequency table, polygon coordinates, and automatic class interval selection.
Histogram Calculator
Generate histograms from raw data with 5 bin methods (Sturges, Square Root, Rice, Freedman-Diaconis, custom). SVG visualization, density, skewness, and bin comparison.
Interquartile Range (IQR) Calculator
Calculate IQR, semi-IQR, quartile coefficient of dispersion, Tukey fences, and outlier detection. Includes box plot, quartile segments, and IQR vs SD comparison.
Mean, Median, Mode Calculator
Calculate arithmetic, geometric, harmonic, trimmed, and weighted means plus median, mode, and modality. Includes frequency table, skewness, and visual comparison.
Median Absolute Deviation (MAD) Calculator
Calculate MAD, scaled MAD, mean absolute deviation, and MAD-based outlier detection. Compare robust vs classical spread measures with visual breakdown.
Midrange Calculator
Calculate the midrange (average of min and max), midhinge, trimean, and deviation analysis. Compare midrange to mean, median, and robust center measures.
Outlier Calculator
Detect outliers using IQR/Tukey fences, Z-score, modified Z-score (MAD), Grubbs, and Dixon Q tests. Visual outlier zones, method comparison, and full data analysis.
Percentile Rank Calculator
Find the percentile rank of a score in a dataset, compute custom percentile values, and compare exclusive/inclusive/mean methods. Includes gauge, decile table, and Z-score.
Population Variance Calculator
Calculate population variance (σ²), sample variance (s²), standard deviation, sum of squares, Bessel correction, and CV. Includes deviation table and computation methods.
Quartile Calculator
Calculate Q1, Q2 (median), Q3, IQR, midhinge, trimean, and five-number summary using 3 quartile methods. Box plot, method comparison, and decile table included.
Relative Frequency Calculator
Calculate relative frequency, cumulative frequency, percentages, and Shannon entropy from ungrouped data. Includes bar chart, ogive curve, and frequency distribution table.
Skewness Calculator
Calculate skewness, kurtosis, and shape metrics from data using Fisher, Pearson, Bowley, and Kelly methods. Includes skewness gauge, method comparison, and significance testing.
Standard Deviation Calculator
Calculate standard deviation, variance, mean, median, quartiles, IQR, confidence intervals, z-scores, skewness, and outliers. Visual box plot, frequency distribution with bars, and preset data sets.
Stem-and-Leaf Plot Calculator
Generate stem-and-leaf plots with frequency counts, back-to-back comparison mode, key interpretation, and summary statistics. Auto-detects stem unit.
Third Quartile (Q3) Calculator
Calculate the third quartile (Q3/75th percentile) using exclusive, inclusive, and interpolated methods. Includes quartile number line, method comparison, derived measures, and percentile table.