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VENN

uses overlapping circles or other shapes to illustrate the logical relationships between two or more sets of items.

random

happening, done, or chosen by chance rather than according to a plan or pattern:

Event

something that happens, especially when it is unusual or important

Intersection

two mathematical objects is where they overlap.

theoretical

relating to what is possible or imagined rather than to what is known to be true or real.

biased

a systematic tendency in which the methods used to gather data and generate statistics present an inaccurate, skewed or biased depiction of reality.

tree

a graph or a structure with nodes, or circles, that are connected by lines.

union

the collection of elements belonging to all of the sets.

experimental

a type of mathematical investigation in which computation is used to investigate mathematical structures and identify their fundamental properties and patterns

mutally exclusive

a statistical term describing two or more events that cannot happen simultaneously.

disjoint

when they have no common element

complement

the collection of elements not in the set