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HP HP-18C User Manual

HP HP-18C
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Running Total and
Statistics Calculations
Introduction
6
The
SUM
menu
is
used
to calculate
the
running
total
of
a list
of
num-
bers
and
to
do
statistical calculations. As you
enter
the
numbers,
the
HP
-18C displays
the
running
total.
Once
the
list
of
numbers
has
been
entered, you can:
• Calculate
the
mean,
median,
standard
deviation,
and/or
range
(largest
number
minus
the
smallest
number).
• Display
the
largest (maximum)
and
smallest
(minimum)
number
in
the
list.
•
Sort
the
list from smallest
number
to largest
number.
• Do
curve-fitting
and
forecasting calculations
using
two
SUM
lists
and
one
of
four
models-linear,
exponential, logarithmic,
and
power
.
(Curve
fitting for
the
linear
model
is called
linear
regression.)
The SUM Menu
To
display
the
SUM
menu,
press
..
in
the
MAIN
menu.
If
you
haven't
previously
used
the
SUM
menu,
the
HP-18C
displays
an
empty
SUM
number
list.
6:
Running
Total
and
Statistics
Calculations
95

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HP HP-18C Specifications

General IconGeneral
BrandHP
ModelHP-18C
CategoryPDA
LanguageEnglish

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