Data-Datum | Commonly Confused Words

Data

/ˈdeɪtə/

Facts or information used for analysis or to make decisions

That data is for them.That data is about the whole city.His research suffered due to corrupt data files.

This word has no antonyms

A single piece of information or fact, often used as the singular form of data

The datum indicated a rise in visitor numbers.Researchers analyzed each datum individually for accuracy.A single erroneous datum skewed our results.

Datum is the singular form, while Data is the plural form.
Data is commonly used as a singular collective noun in modern usage, especially in informal contexts, like The data is incorrect.
Datum is rarely used in everyday conversation and mostly appears in scientific contexts when referring to a single piece of information.
Remember that if youre talking about one single point or piece, think Datum'.
If youre referring to multiple points or pieces, use Data', which is more familiar and widely understood.