Paste your data and instantly visualise the five-number summary, IQR, whiskers, and outliers — with a real box plot chart and plain-English interpretation of distribution shape.
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Paste your data and press Calculate to see the five-number summary, IQR, outliers, and a real box plot chart.
The box spans from Q1 (25th percentile) to Q3 (75th percentile). This is the Interquartile Range (IQR) — the spread of the middle 50% of your data. A narrow box means data is concentrated. A wide box means high variability in the core of the dataset.
The whiskers extend to the most extreme values still within 1.5 × IQR of Q1 and Q3. Any data point beyond the whiskers is flagged as an outlier. Outliers are not errors by definition — they may represent real events worth investigating.
If the median is near the centre of the box, the data is roughly symmetric. If it is closer to Q1, the distribution is right-skewed (long upper tail). Closer to Q3 means left-skewed. Comparing the mean and median also reveals skewness direction and magnitude.