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correlation
noun
a
connection
or
relationship
between
two
or
more
things
in
which
a
change
in
one
is
often
linked
with
a
change
in
another
•
Researchers
found
a
strong
correlation
between
regular
exercise
and
happier
moods
in
teenagers
.
Researchers
found
a
strong
correlation
between
regular
exercise
and
happier
moods
in
teenagers
.
•
There
seems
to
be
little
correlation
between
how
wealthy
someone
is
and
how
generous
they
are
.
There
seems
to
be
little
correlation
between
how
wealthy
someone
is
and
how
generous
they
are
.
from
Latin
correlatio
(“
reciprocal
relation
”),
from
com-
(“
together
”)
+
relatio
(“
bringing
back
,
relation
”)
noun
in
statistics
,
a
numerical
measure
that
shows
how
strongly
and
in
what
direction
two
variables
move
together
•
The
Pearson
correlation
coefficient
for
the
data
set
was
0
.
87
,
indicating
a
strong
positive
relationship
.
The
Pearson
correlation
coefficient
for
the
data
set
was
0
.
87
,
indicating
a
strong
positive
relationship
.
•
A
scatter
graph
that
slopes
downward
usually
signals
a
negative
correlation
.
A
scatter
graph
that
slopes
downward
usually
signals
a
negative
correlation
.
extended
from
the
general
sense
in
early
20th-century
mathematical
statistics
