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17
8. Mixed
calculation
(1 '
X
(3+5
)
x
(4+3
)
X(H
1))
+(2
x
(3+1)
X(4
+
1»)
=
5080
-I
8.
E)@20IlilaE!
l
@
~lli]4El
I
Iill[illEi
-I
-I
-I
Ex.
I
-
0.557856
Js
+!
<
I
-
0.2
)
-
@J1lil3@01lil1ElO2[ij]1!l
5040.
~
.
5080.
--
I
0.64
El3@l@]@
-
I
0.
557856
Note:
I.
[]llilWJWJ
-
lEO
.
Parentheses
should
not be used more than three
levels.
2·
@J301lil@l@l-
",IE-"
O.
~
_ _ --"
@
and@1
keys
should
be
used
in
pairs.
3.
@J2
1lil3El'
@l8
-I
7.
Just before and afte
r
parenlheWi
in
the
midd
le
o
r
th
e
calculation
the appropria
te
runction
key
should be depressed
if
necessary.
B.
FUNCTIONAL CALCULATION
1 .
Statistical calculation
Ex. Given the following dala:
X,=
l23,
X,=456.
X,=
789
Calculate
t
he s
tandard dev
iation(
q
).
@jVariance(
d'
)
@
Standard
devi.tion(d
)
-
.
1.
271. 89336
~Number
of
dua
(n)
-.
1.
3
.
In the
stalislicai
clilculation
mode
the memory
is used
as
an
item cou nter,
$0
0
and
!ill
keys
are
neglected.
Variance (0') has an
eHor
within
0.0
1
per-i:cnt of
the
mc'\.Q
value (x
).
To clear Ihis
mode
depress
@]
leey.
In case that incorrect datum has
been
entered
take the
following
operation.
x: inco rrect
datum
b: correct datum
i
)
BeforeElorEJ
key:
@J!!' I
' El' El'
El
b
8
ii
)
AflerEJorEJkey
:
@J!!' I
·El"EJ(,..8)!!'IEl'Elb8
18
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