Casio FX-6300G, Owner'S Manual

Page: 68 / 187

Statistical Calculations
■Standard deviation
•Standard deviation calculations are performed in the
SD1
mode ( g Q ) .
“ SD1
”
appears on the display.
•Before beginning calculations, the statistical memories are cleared by pressing
¡
shift
) followed by HD and then (g).
•Individual data are input using
(
d t
).
•Multiple data of the same value can be input either by repeatedly pressing
(d t)
o r
by entering the data, pressing
S
, followed by
C D ,
that represents the number
o f
times the data is repeated, and then
( d t ) .
•Standard Deviation
'LpCi— x ) 2
_
I E x 2- ( L x ) 2/n
n \ n
¿ ( * - 3 c ) 2 = /
L x 2- ( L x f l n
n
~ 1
\ n -
1
•Mean
n
n n
*The values for n, Lx, and L x 2 are stored in memories W, V, and U respectively ,
and can be obtained by pressing H followed by the memory name and then dl)
(i.e. (AiMlfwliKE)).
Example Operation Display
Data
55, 54, 51, 55, 53, 53,
54, 52
*You can press the functioi
sequence.
(S
I
S Q
(SHiFTlfSdliEXi)
(Clears memory)
55(
dt
)54(
dt
)51 (
dt
)55(
dt
)
53(1
x
3(
dt
)54(
dt
)52(
dt
)
n keys to obtain results in any
(Standard deviation on)
|SHirT||xow|iixi]
Standard deviation o n - 1)
|SHIFT|
|x<^n|
fixil
52.
1.316956719
1.407885953
- 6 7 -
Using sample data from a popu­
lation to determine the standard
deviation for the population
Using all data from a finite popu­
lation to determine the standard
deviation for the population