Casio CFX-9800G - Page 66

Chapter 5 {||| Statistical Calculations
There
are
two
types
of
statistical
calculations:
sing/e-variable
statistical
calculations
per-
formed
using
standard
deviation,
and
paired-variable
statistical
calculations
periormed
using
regression.
Regression
calculations
can
be
performed
using
linear
regression,
logarithmic.
regres”
sion,
exponential
regression
and
power
regression.
-
No
matter
what
type
of
statistical
calculations
you
decide
to
perform,
you
can
tell
the
unit
to
either
store
the
statistical
data
or
not
to
store
the
data.
Choosing
storage
of
data
causes
the
data
you
input
to
be
stored
in
special
statistical
data
memory.
Choosing
non-storage
of
data
causes
the
data
you
input
to
be
processed
and
discarded
as
soon
as
yourinput
it.
If
you
choose
to
store
the
data,
be
sure
to
clear
memory
contents
before
beginning
calculations.
5.1
Single-Variable
Statistical
Calculations
...
|.
:
You
should
use
the
Standard
Deviation
Mode
to’perform
singlé-variable
statistical.
caleus
lations. In this mode, you can calculate the population standard deviation, the sample
standard deviation, the mean, the sum 6f squares of the data, the sum of the data, and
the number of data items.
To Enter the Standard Deviation Mode without Data Storage
Highlight the $D icon on the Main Menu and then press G4).
Press [F)(SET) to make the set up display appear. Next, use the procedure on page 23
to specify NON-(STO) for the statistical data (S-data).
* Press (G1), and the single-variable statistical menu appears on the display.
EXIT]
Disrlayt
-D/Cryt HDi se
[oTlc . i
”ARMR HB Hf & F&
*When drawing a graph for single-variable statistical data, S-graph must be set to the
DRAW Mode (page 23).
The following are the operations that are available from the function display at the bottom
of the screen. Press the function key below the operation you want to perform.
(OT) .. Inputs data
F2)(CL) Clears data
(F3](;) .... .. Used to input the number of data items
—%—
F4)(DEV) Statistical/representative menu -
F5}(L) . Sum data menu
a (PQR) - .. Probability disttibution menu
The unit uses the following value memories to:store values.’ Do not" use these memories
for storage if you plan to perionn statistical operations:
Value Memory. | U Vv Ww fae
Statistical Data Ex? [* Ex n
eTo input data 2 :
[Example 1] To input the data 10, 20, 30
(arn) (1A) (F2) (Scl) Ge En)
» 10) (DT) 20) (DT) 30F:
(DT)
Example 2] To input the data 10, 20, 20,30
103 (01) 2063(0T)E(0T) 306/07)
Note that simply pressing gen inputs the. previously entered data.
Example 3] To input the data 10, 20, 20, 20, 20, 20, 20, 30 on
10()(DT)2083(;) 6F3(07) 30 (07), :
Note that you can iriput multiple‘data items by entering the data, pressing F3(;), and then
entering the number of data items.
tied ot j cect gta
®To delete. gata
Example 1 Data input sequence: 40] (DT)20 Fi) 120 (0T) u :
To delete ’the S0I(DT) (last data item’ entered), ‘press FAC ie
Example 2| Data input sequence: 40(Fi](DT)20(Fi(DT) 30. (DT)
To delete the 20(F1(DT), enter 20(2)(CL).
[Example 3] Data input sequence: 30(F] (DT) 50 (DT) 12063;
To!
cele,
the
20
:
3
:
Eire.
Example 4] Data input-sequence: 30(F) (DT) 50 (D7) 120833) 31 ate fia
To delete the 120(3(;)31, press G3.
Example 5] Data input sequence: 30(9 (D7) 50(DT) 12083(;)31(0T)
To delete the 120(F3)(;)31F)(DT) {last item entered), press [F2)(CL).
Example. 6] Data input sequence: 50(F)(DT) 120(3(;)31 (DT) 30
To delete the 120! Fal(; 331 (OT), enter 120(F3]{;)31[F2)(CL).
(DT)
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