Data plural or singular?

[Ralph]

Hello, I would like to ask you for help, or at least information, data plural or singular Thank you very much for your kind help and not to ignore my subject.

[Brendan]

Data is a Latin plural with a singular datum though datum is seldom used on its own any more. The Macquarie Dictionary says: 'The connection between data the plural and datum the singular has been almost completely broken, so that while datum survives in such compounds as datum point, it does not have the frequency of use that data has.