SR8B2-E.RTF SIZE : 140x140mm SCALE 2:1
-
E19-
[SHIFT] [
Σ
x
2
]
SD DEG
247.
Sum of square value
[SHIFT] [
Σ
x]
SD DEG
41.
Sum of value
[
x
]
SD DEG
4.555555556
Arithmetical mean
[
σ
n–1
]
SD DEG
2.743679606
Sample standard
deviation
[SHIFT] [
σ
n
]
SD DEG
2.586765939
Population standard
deviation
[SHIFT] [SD]
SD DEG
2.586765939
Back to normal mode
[ON/C]
SD DEG
0.
Clear display
Notes:
The sample standard deviation
σ
n–1
is defined as
1
)
(
2
2
−
Σ
−
Σ
n
n
x
x
The population standard deviation
σ
n is defined as
n
n
x
x
2
2
)
(
Σ
−
Σ
The arithmetical mean x is defined as
n
x
Σ
•
You do not have to press
σ
n
,
σ
n–1
,
x
, n,
Σ
x or
Σ
x
2
in any particular
sequence.
•
To delete an incorrect entry, press [
DEL
].
PROGRAMMING
Storing Mathematical Procedures
With your Programmable Scientific Calculator, complex repeated
calculations are no longer time-consuming chores. All you have to do
is tell the calculator what you want to do in a way it can understand (in
other words, program it).
Your calculator can store one procedure with up to 40 steps. These
"steps" can be either steps (like mathematical functions) or characters
(like numbers). Each function counts as one step. It remembers the
procedure even after you turn off the calculator. You can have more
than one variable in your calculation.
