Randomize vs. Randomise — What's the Difference?

The difference between "randomize" and "randomise" lies in regional spelling conventions rather than in meaning or application. In American English, "randomize" is the preferred spelling, aligning with the American usage of "-ize" in words like "organize" and "realize". Conversely, "randomise" is favored in British English, which often adopts "-ise" endings for verbs, consistent with other words like "organise" and "realise".

Both terms refer to the process of making a selection, order, or distribution without any set pattern, plan, or purpose to ensure fairness, prevent bias, or for experimental purposes. For example, researchers might randomize the allocation of participants in a study to control groups or treatment groups to ensure the results are not influenced by pre-existing differences.

The choice between "randomize" and "randomise" does not impact the meaning of the term or its application in contexts such as scientific research, statistics, or everyday use. The primary consideration is the intended audience or the standard spelling conventions of the publication or document being prepared.

While the American spelling is widely accepted and understood internationally, it's essential to consider the audience and the context. For instance, academic journals or institutions in the UK, Australia, and other countries favoring British English might require the use of "randomise".

Despite these differences, the concept of randomization is fundamental in various fields, particularly in research and statistical analysis, where it is crucial for ensuring the reliability and validity of experimental outcomes.