I used to follow my mother.
One piece of information is a datum, many pieces are data. Data is plural.
Data can be either singular or plural.
The etymology is from the Latin word
datum that we still use, and the plural of that word is "data".
So while we could talk about a "datum point" on a chart, we can talk about "data points" on the chart.
In scientific circles you may still see people referring to data as though it is a plural word, using plural verbs.
So, for example, one might say "the data
are showing us that..."
But
data is also treated as singular in that it is taken to be the collective term for the many bits of data. Data, in this regard, is the singular word for the set of individual data (plural) points.
And is thus treated as singular.
So we talk about "the data
is showing us that..."
The distinction, I think, is a matter of what you are referring to: if you are referring to multiple specific data points then you would use data as plural. If you are referring to data as a collective word then it would be singular.
Gotta love the confusing English language.
