<s>
Casio	B-Device
fx-3650P	I-Device
is	O
a	O
programmable	O
scientific	O
calculator	O
manufactured	O
by	O
Casio	O
Computer	O
Co.	O
,	O
Ltd	O
.	O
</s>
<s>
For	O
some	O
input	O
data	O
,	O
the	O
sum	O
of	O
squares	O
of	O
values	O
( Σx2	O
)	O
,	O
sum	O
of	O
values	O
( Σx	O
)	O
,	O
number	O
of	O
data	O
(	O
n	O
)	O
,	O
sample	B-General_Concept
standard	I-General_Concept
deviation	I-General_Concept
(	O
xσn-1	O
)	O
and	O
population	B-General_Concept
standard	I-General_Concept
deviation	I-General_Concept
(	O
xσn	O
)	O
can	O
be	O
calculated	O
.	O
</s>
