3 calculators in this category
- Z-Score CalculatorStandard normal distribution (standardisation)A z-score says how many standard deviations a value sits above or below the mean. Enter the raw value, the mean and the…
- Percentile CalculatorSample quantile definitions (Hyndman & Fan, 1996)Enter a data set and a percentile and this calculator returns the value at that point in the sorted data, together with the…
- Quartile & Interquartile Range (IQR) CalculatorTukey's hinges and the 1.5 x IQR outlier rule (Exploratory Data Analysis, 1977)This calculator returns the first quartile, the median, the third quartile and the interquartile range of your data, then…
Which one do you need?
- Z-Score Calculator
- Convert a raw value into a z-score with its percentile and one- and two-tailed probabilities, for a single observation or for a sample mean of size n.
- Percentile Calculator
- Find the value at any percentile of a data set, with a choice of three standard rank methods, the interpolated rank position, and a full percentile ladder.
- Quartile & Interquartile Range (IQR) Calculator
- Find Q1, Q3 and the interquartile range, plus the 1.5 x IQR outlier fences and the five-number summary you need to draw a box plot from any data set.