Casio FX300MS User Guide - Page 23

Statistical, Calculations

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• Example 2: To convert rectangular coordinates (1, 3) to polar coordinates (r,␪) (Rad) r ҃ 2 f1P L3T= θ ҃ 1.047197551 0 o • Press 0 n to display the value of r, or 0 o to display the value of ␪. k Engineering Notation Calculations • Example 1: To convert 56,088 meters to kilometers → 56.088 ҂103 (km) 56088 = J • Example 2: To convert 0.08125 grams to milligrams → 81.25 ҂10 -3 (mg) 0.08125 = J Statistical SD Calculations REG Standard Deviation SD Use the F key to enter the SD Mode when you want to perform statistical calculations using standard deviation. SD F 2 • In the SD Mode and REG Mode, the | key operates as the S key. • Always start data input with A B 1(Scl) = to clear statistical memory. • Input data using the key sequence shown below. S • Input data is used to calculate values for n, Σx, Σx2, o, σn and σn-1, which you can recall using the key opera- tions noted nearby. E-21

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E-21
SD
REG
SD
•
Example 2:
To convert rectangular coordinates (1,
3)
to polar coordinates (
r
,
±
) (Rad)
r
²
2
f
1
P
L
3
T
=
θ
²
1.047197551
0
o
• Press
0
n
to display the value of
r
, or
0
o
to dis-
play the value of
±
.
k
Engineering Notation Calculations
•
Example 1:
To convert 56,088 meters to kilometers
→
56.088
±
10
3
56088
=
J
(km)
•
Example 2:
To convert 0.08125 grams to milligrams
→
81.25
±
10
–3
0.08125
=
J
(mg)
Statistical
Calculations
Standard Deviation
Use the
F
key to enter the SD Mode when you want
to perform statistical calculations using standard de-
viation.
SD
...................................................................
F
2
•
In the SD Mode and REG Mode, the
|
key operates as
the
S
key.
•
Always start data input with
A
B
1
(Scl)
=
to clear
statistical memory.
•
Input data using the key sequence shown below.
<
x
-data>
S
•
Input data is used to calculate values for
n
,
Σ
x
,
Σ
x
2
,
o
,
σ
n
and
σ
n
-
1
, which you can recall using the key opera-
tions noted nearby.