Fiamo ECO 30 Benutzerhandbuch Seite 18

Function Key
[2nd] [σxn]
[2nd] [σxn
[2nd] [ ]
(r)
[2nd] [∑x
(θ)
[2nd] [∑x]
[2nd] [n]
(r)
Example:
(θ)
Enter the following data to calculate ∑x, ∑x
= 5, data 6~8 = 9.
Example
(x)
Enter all data 1~9
(y)
(x)
(y)
ms
n = ?
S = ?
∑x = ?
∑x
σ = ?
40.
Note: The calculator doesn't keep a record of all the entries you make and these
35.
entries aren't retained even if turning off.
Solar power supply
The calculator is 100% solar powered.
The solar panel needs to work a minimum intensity of illumination 200 LX. Working
with light lower than 200 LX is harmful.
Antibacterial coating
The keyboard of the calculator is made of a material which contains IONPURE parts,
inhibit bacterial growth on the surface of the pocket calculator.
∑–]
]
–1
]
2
= ?
= ?
2
Result
Population standard deviation
(n weighting)
Sample standard deviation
(n–1 weighting)
Mean,
Sum of squares, ∑x
Sum, ∑x
Number of data points, n
, n, , S, σ, where data 1 = 2, data 2~5
2
Function Key
2 [∑+]
5 [∑+]
5 [∑+]
5 [∑+]
5 [∑+]
9 [∑+]
9 [∑+]
9 [∑+]
[2nd] [ ] (Mean)
[2nd] [n]
(Number of data points)
[2nd] [σxn ]
–1
(Sample standard
deviation)
[2nd] [∑x] (Sum)
[2nd] [∑x ]
2
(Sum of squares)
[2nd] [σxn]
(Population standard
deviation)
7–EN
2
Display
n = 1
n = 2
n = 3
n = 4
n = 5
n = 6
n = 7
n = 8
6.125
8.
2.587745848
49.
347.
2.420614591