Summarize a Data Set

These calculators describe a list of numbers you already have. They give its centre (mean, median, mode), its spread (standard deviation and relative standard deviation), where a single value sits (percentiles) and the five-number summary with outliers (box plot). Paste your data into any of them; the page also has a worked explanation and FAQ, so you can check the method by hand.

Tools in this group

• Box and Whisker Plot Calculator — Paste one or more data sets to get the five-number summary, IQR, outlier fences and a box and whisker plot for each.
• Mean Median Mode Calculator — Paste a list of numbers to get the mean, median, mode and range, with the sorted list, a frequency table and the working.
• Percentile Calculator — Paste a data set to find the k-th percentile or the percentile rank of a value, with the method and position shown step by step.
• Relative Standard Deviation Calculator (%RSD) — Paste replicate measurements, or type a mean and standard deviation, to get the percent relative standard deviation with the working.
• Standard Deviation Calculator — Paste a list of numbers to get the sample or population standard deviation, variance and mean, with the full hand calculation.