What is the term used to describe a single piece of information?

The term "datum" specifically refers to a single piece of information or a singular fact. In scientific and statistical contexts, data is often used as a plural noun that encompasses multiple pieces of information. While "information" can refer to a collection of data that has been processed to provide meaning, "datum" makes it clear that the focus is on a singular unit. Therefore, when identifying a single piece of information, "datum" is the most accurate choice.

In contrast, "data" typically implies a set of observations or results, and "statistics" refers to the study and interpretation of such data, encompassing methodologies and interpretations rather than individual pieces of information.