Sharp OZ-707 Operation Manual - Page 44

Single-Variable Statistical Calculations

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Note: The contents of numeric, string, or array variables which start with "Z· will not be retained after cancelling the STAT mode. Display format To specify the display and print format, press the o::J key in the STAT menu. * DISPLAY MODE * Press the IT] key to specify double-precision format or the CD key for single-precision format. If ou do not wish to change the format specification, press the IPLAY BACK Ikey. The STAT menu will be displayed, with (SNG) to indicate single-precision and (DBL) to indicate double-precision. Note: All calculations are performed in double-precision. Only the display and print out change. Single-Variable Statistical Calculations Single-variable calculations The following statistics can be obtained from single-variable statistical calculations . n: Sample size of x x: Sample mean x Lx: Sum of samples x 2.1: Sum of squares of samples x s: Sample standard deviation with population parameter taken to be n-1. s = ~'IIr.x' - nx ' n-l This equation is used to estimate the standard deviation of a population from sample data (x) extracted from that population. 76 a: Population standard deviation with population parameter taken to be n. -V a= 'J:.x' - n.x 2 n This equation lets you assume the entire population as sample data (x) or determine the standard deviation of the sample data which is taken to be a population. Selecting single-variable statistical calculations After displaying the STAT menu, press the [ T I key to select single-variable statistical calculations. The single-variable submenu will be displayed. I STAT II CIJ FUNCT I CIt·iS (x) 1 . INPUT 2 . DELETE :3 . At·1 ALYS I~; 4. PP ltHEP ::::ELECT t·lo . ? The following can be selected from the submenu : [TI ... INPUT: Used for entering data. crJ ... DELETE: Used for deleting the entered data if the data was incorrect or to start a new calculation. CD ... ANALYSIS: Used for obtaining statistics. CI:J ... PRINTER: Used for printing the obtained statistics. Available only if the optional printer is connected to the Organizer. Press the I PLAY BACK II key to display the STAT menu. Entering data Press the I T ] key to display the data input prompt. Enter the data. IT' r-----------~ L-L-J DATA INPUT(x) 1: x=_ ~ Data to be entered. Indicates the number of data entered. 77

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Note:
The contents of numeric, string, or array variables which start with "Z·
will not
be
retained after cancelling the STAT mode.
Display format
To specify the display and print format, press the
o::J
key
in
the
STAT menu.
*
DISPLAY
MODE
*
Press the
IT]
key to specify double-precision format or the
CD
key for single-precision format.
If ou
do
not wish to change the format specification, press the
I
PLAY
BACK
I
key. The STAT menu will be displayed, with (SNG) to
indicate single-precision and (DBL) to indicate double-precision.
Note:
All calculations are performed
in
double-precision. Only the display and
print out change.
Single-Variable Statistical Calculations
Single-variable calculations
The following statistics can
be
obtained from single-variable statistical
calculations.
n:
x:
Lx
:
2.1
:
s:
Sample size
of
x
Sample mean
x
Sum of samples
x
Sum of squares of samples
x
Sample standard deviation with population parameter
taken to
be
n-1.
~
Ir.x
'
-
nx '
s
=
'I
n-l
This equation
is
used to estimate the standard
deviation of a population from sample data
(x)
extracted from that population.
76
a:
Population standard deviation with population
parameter taken to be
n.
a=
-V
'J:.x
'
-
n.x
2
n
This equation lets you assume the entire population as
sample data
(x)
or determine the standard deviation of
the sample data which
is
taken to
be
a population.
Selecting single-variable statistical calculations
Aft
er
displaying the STAT menu, press the
[TI
key to select
single-variable statistical calculations. The single-variable submenu will
be displayed.
II
S
TAT
II
CIJ
FUNCT
I
CIt·
iS
(x)
1 .
IN
P
UT
2 .
DEL
ETE
:3
.
A
t·1
AL
YS
I~;
4.
PP
ltH
EP
::::ELECT
t·
lo .
?
The following can be selected from the submenu:
[TI
...
INPUT:
crJ
...
DELETE:
Used for entering data.
Used for deleting the entered data if the
data was incorrect or to start a new
calculation.
CD
...
ANALYSIS:
Used for obtaining statistics.
CI:J
..
.
PRINTER:
Used for printing the obtained statistics.
Available only if the optional printer is
connected to the Organizer.
Press the
II
PLAY
BACK
II
key to display the STAT menu.
En
tering data
Press the
IT]
key to display the data input prompt.
Enter the data.
IT'
r-----------~
L-L-J
DATA
INPU
T(x)
77
1 :
x=_
~
Data
to
be entered.
Indicates the number
of
data
entered
.