Statistical calculation Standardisation and normalisation Normalisation Standardisation Standardize or normalize data by some statistical method. 1.6 In the simplest normalisation means adjusting values measured on different scales to a common scale (often between 0.0 and 1.0), but can refer to more sophisticated adjustment whereby entire probability distributions of adjusted values are brought into alignment. Standardisation typically refers to an operation whereby a range of values are standardised to measure how many standard deviations a value is from its mean.