Casio fx 991MS User Guide - Page 28

Statistical, Calculations - statistics

Get Casio fx 991MS - Scientific Display Calculator PDF manuals and user guides
UPC - 079767134860
View all Casio fx 991MS manuals
Add to My Manuals
Save this manual to your list of manuals

Page 28 highlights

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 (fx-95MS) F F 1 (Other Models) • 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. To recall this type of value: Σx2 Σx n o σn σn-1 Perform this key operation: A U 1 A U 2 A U 3 A X 1 A X 2 A X 3 • Example: To calculate σnҀ1, σn, o, n, Σx, and Σx2 for the following data : 55, 54, 51, 55, 53, 53, 54, 52 In the SD Mode: A B 1 (Scl) = (Stat clear) 55 S n= SD 1. Each time you press S to register your input, the number of data input up to that point is indicated on the display (n value). 54 S 51 S 55 S 53 S S 54 S 52 S Sample Standard Deviation (σnҀ1) = 1.407885953 A X 3 = 26

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
26
SD
SD
REG
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
(fx-95MS)
F
F
1
(Other Models)
•
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.
To recall this type of value:
Perform this key operation:
Σ
x
2
A
U
1
Σ
x
A
U
2
n
A
U
3
o
A
X
1
σ
n
A
X
2
σ
n
-
1
A
X
3
•
Example:
To calculate
σ
n
µ
1
,
σ
n
,
o
,
n
,
Σ
x
, and
Σ
x
2
for
the following data : 55, 54, 51, 55, 53, 53, 54, 52
In the SD Mode:
A
B
1
(Scl)
=
(Stat clear)
55
S
Each time you press
S
to register your input,
the number of data input up to that point is
indicated on the display (
n
value).
54
S
51
S
55
S
53
S
S
54
S
52
S
Sample Standard Deviation (
σ
n
µ
1
) =
1.407885953
A
X
3
=
1.
n=
SD