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ymean2

ymean2 is not a universally defined mathematical object. It is a label that may appear in different contexts to denote the mean of a second component within a multivariate collection. Because there is no single standard definition, its exact meaning depends on the notation and domain in which it appears.

Common interpretations include: 1) In a data matrix Y with columns representing variables, ymean2 typically refers

Because the term is informal, readers should locate the precise definition in the source material. If used

See also: mean, column mean, multivariate statistics, time-series analysis.

to
the
mean
of
the
second
column
across
observations.
2)
In
a
dataset
of
paired
values,
ymean2
may
denote
the
average
of
the
second
component
across
a
sample
or
within
a
subgroup.
3)
In
multivariate
time
series,
ymean2
can
denote
the
time-averaged
value
of
the
second
series.
as
a
function
name
in
code,
ymean2
will
have
a
specific
signature
and
return
value;
if
used
as
a
variable,
it
holds
the
computed
mean
for
the
second
component.