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Texas Instruments TI Programmable 57 User Manual

Texas Instruments TI Programmable 57
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SECTION
3:
STATISTICAL
FUNCTIONS
AND
KEYS
In
many
situations
—
in
school
work,
everyday
life,
or
business,
you
may
find
yourself
handling
large
sets
of
data
points.
This
data
could
be
from
laboratory
measurements,
test
scores,
results
from
a
study
or
research
project,
etc.
Your
calculator
is
equipped
with
features
allowing
you
to
easily
collect
and
analyze
data
by
rapidly
calculating
mean,
variance;and
standard
deviation,
Intermediate
results
are
stored
in
the
memories
for
you
in
an
easy
to
access
fashion.
(You'll
find
this
especially
useful
in
programming
with
statistics
—
as
you'll
see
later
on
in
this
book.)
You
can
also
simultaneously
analyze
two
sets
of
data,
allowing
you
to
examine
relationships
between
them
in
advanced
statistical
programming.
To
collect
and
analyze
sets
of
data
here's
the
procedure:
-
Begin
any
and
all
statistical
calculations
by
either
turning
your
calculator
OFF
and
ON,
or
by
pressing
the
[INV]
[24]
Mikey
sequence.
If
you
have
only
one
set
of
data
to
analyze:
eEnter
each
data
point
¢Press
(2nd)
EZ
¢Repeat
for
all
data
points
¢
Press
[2nd]
Eto
calculate
the
mean
of
the
data
¢
Press
[2nd)
MEI
to
calculate
the
variance
of
the
data:
(with
N
weighting).
*
Press
[2nd]
BI
to
calculate
the
standard
deviation
of
the
data
(with
N
weighting).
(“N
weighting"
means
that
the
total
number
of
data
points
is
used
in
the
calculation
of
the
variance
—
this
type
of
variance
is
called
a
population
variance.)
If
you
have
two
sets
of
data
to
analyze
simultaneously:
Call
the
two
sets
of
data
"x"
(independent)
and
“y”
(dependent)
arrays
of
data,
¢
Enter
an
x”
data
point
¢
Press
[zt]
*Enter
a
“y’’
data
point
*
Press
(2nd)
EE
*
Repeat
for
all
points
¢
Press
[Inv]
[2nd]
Eto
calculate
the
mean
of
the
x’
data
points,
*Press
to
calculate
the
mean
of
the
“y’’
data
points
¢
Press
[INV]
[2nd]
FJ
to
calculate
the
variance
of
the
’’x”
data
points
*
Press
[and)
[J
to
calculate
the
variance
of
the
‘y"’
data
points
*
Press
[iN]
[2ed)
ZI
[7=]
to
calculate
the
standard
deviation
of
the
‘'x”’
data
points.
*
Press
[2nd]
FEL]
to
calculate
the
standard
deviation
of
the
“y’’
data
points.

Table of Contents

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Texas Instruments TI Programmable 57 Specifications

General IconGeneral
BrandTexas Instruments
ModelTI Programmable 57
CategoryCalculator
LanguageEnglish

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