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19
The tab
le shows the
marks
No.
MARK
No.
MARK of
mathematics eX\"l'
Calculate the
mean
value
(
X)
1
2
3
4
5
42
6
"
and
the
standard
deviation
(0).
36
7
0
0
8
29
"
,
40
30
10
34
Intennediate number of
data
-1
.4
.
~308
158
0
§l§J8 -1. 24.
7i4285
298
"
8 340
Oil
-
~1~
2 7
~ . ~
6
:;===
§l
-1 .266.
«
@I
(
0"
)
-1. 16.
322989
If "0"
is
included in
data.
I§
key
should
be
depressed
twice
after
@]
key
as
the
example
shown
above.
In
the
case
of checking up the number of
data
or
varian
ce
during
calculation, make
sure that
~
(or
§
)
key mould
be
followed after th
e conrmnatio ns
in
order
to
return
to
the
previoul slIte.
2
.
Trigon ometrical fun ct ion
Ex.
si
n30'
+
cos45"
I.
2071068
- 1
1.2071068
EL si
n(30"
30'
30")
O
.
5076637
-
I
O
.
5016637
Ex. s
in-
'
(0.
2)
+
tan-
'(O.
4
)
O
. 5818642Radian
D6G
@]02
~~E1841!!!l§JEJ
-I
0.
5818642
Note:
90in
degree=
x
l2
in rad
ian
=
l
00
in grad
3.
Hyperb
olic
f unction
Ex. s
inh
2
-
3. 6268602
.
Ex.
Tanh-
'
(0.
5)
0.
5493061
eX
_
e-
X
Note:
S
inhX
=
2
eX+e-
x
~
CoshX=
2
00:::::>0
d
.
@)0
5
~§J~
-
1
3.
6268602
- I
0.
5493061
eX_
e-
x
,
TanhX
eX+e-
x
-
1
26.
565051
In
thi
s
case
~
key
i
s
neglected.
20
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