274 STATISTICS •^ VENN DIAGRAMS
Art class No activities
Remember, a set is a collection of
things or numbers, or a group of
people. For example, a set might be
the foods you like or the dates of
your family’s birthdays. This group of
eight friends forms a set. Most of
them do activities after school.
There are three after-school
activities that the friends do:
music lessons, art classes, and football
practice. We can put the friends into
smaller sets, according to which
after-school activities they do.
Each thing or person in the
set is called a member or
element of the set. Sets are often
shown with a circle drawn around
them. Here is the set of friends.
Friend who does
no after-school
activities
Each friend is a
member of the set
Set of friends
Sarah Tessa Steve Owen Peter Mabel Shahid Rona
Rona
Rona
Rona
Shahid
Shahid
Sarah
Sarah
Sarah
Steve
Owen
Owen
Steve Steve
Steve
Mabel
Tessa
Tessa
Mabel Tessa
Peter
Peter
Music lesson Football practice
Venn diagrams
A Venn diagram shows the relationships between different
sets of data. It sorts the data into overlapping circles.
The overlaps show what the sets have in common.
Venn diagrams
show sets of data
as overlapping circles.
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