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A data point is a single unit of information.
A data set is a collection of data points (also known as a data series).
Is there a word for a collection of data sets?
I don't simply want to use "data sets" because of the context; it is important they look distinct at a glance.
Superset is often used to refer to a set of sets, see http://en.wiktionary.org/wiki/superset.
It can also be referred to as a family of sets
In software, especially when dealing with taxonomy relations, you will often use the word parent. So you would talk about parent sets and child sets with points existing in the children.
