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Idiomas disponibles
Standard deviation
Press
to activate SD mode in order to perform statistical calculations using standard
1
MODE MODE
deviation. In this mode,
After data input, you can calculate: n, ∑x, ∑x
Press
to calculate the sum of squares of values (∑x
1
SHIFT
S-SUM
Press
to calculate the sum of values (∑x).
2
SHIFT
S-SUM
Press
to calculate the number of data (n).
3
SHIFT
S-SUM
Press
to calculate the arithmetic mean (x).
1
SHIFT
S-VAR
Press
to calculate the population standard deviation (σ
2
SHIFT
S-VAR
Press
to calculate the sample standard deviation (σ
3
SHIFT
S-VAR
•
In order to clear the statistical memory of the calculator, always press
before you start the data input.
•
Pressing
more than once will input the same data. It is also possible to input multiple
DT
entries of the same data by pressing
the data "75" twenty times).
▴
▾
•
Press
and
Press
to delete a data value.
CLR
SHIFT
•
Example:
Calculate ∑x
91 - 79 - 90 - 85 - 78 - 78 - 78 - 96 - 83 - 102 - 84
SHIFT
CLR
91
79
DT
∑x
= 81664
2
∑x = 944
n = 11
x = 85.81818182
= 7.696731087
σ
n
= 8.072399666
σ
n-1
DE FR EN ES
EN
S
TATISTICAL CALCULATIONS
works as the data key (
M+
, x, σ
2
SHIFT
to scroll through the data you have input, and change it if you need.
, ∑x, n, x, σ
and σ
2
n
n-1
=
1
DT
90
DT
85
78
DT
SHIFT
SHIFT
SHIFT
SHIFT
SHIFT
SHIFT
56
). Press it every time after input data.
DT
and σ
n
n-1
).
2
).
n
).
n-1
(e.g. pressing 75
;
SHIFT
for the following data:
;
3
DT
96
DT
SHIFT
=
1
S-SUM
=
2
S-SUM
=
3
S-SUM
=
1
S-VAR
=
2
S-VAR
=
3
S-VAR
1
SHIFT
CLR
;
20
DT
will input
83
DT
102
DT
84
DT
=
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