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File name : HDB0R100721_Italian_text_100426.doc
version : 10/04/26
Σ
x
2
Σ
y
2
[4: Sum] [ 1 ]
[4: Sum] [ 3 ]
Somma di tutti i valori x
2
o valori y
2
Σ
x
3
Σ
x
4
[4: Sum] [ 6 ]
[4: Sum] [ 8 ]
Somma di tutti i valori x
3
o valori y
4
Σ
x y
[4: Sum] [ 5 ] Somma di ( x • y ) per tutte le coppie
x-y
Σ
x
2
y
[4: Sum] [ 7 ] Somma di ( x
2
• y ) per tutte le coppie
x-y
n [5: Var] [ 1 ] Numero di coppie x-y immesse
x
y
[5: Var] [ 2 ]
[5: Var] [ 5 ]
Media dei valori x o dei valori y
x
σ
n-1
y
σ
n-1
[5: Var] [ 4 ]
[5: Var] [ 7 ]
Deviazione standard campione dei
valori x o y
x
σ
n
y
σ
n
[5: Var] [ 3 ]
[5: Var] [ 6 ]
Deviazione standard di popolazione
dei valori x o y
minX [6: MinMax] [ 1 ] Minimo del valore x
maxX [6: MinMax] [ 2 ] Massimo del valore x
minY [6: MinMax] [ 3 ] Minimo del valore y
maxY [6: MinMax] [ 4 ] Massimo del valore y
A [7: Reg] [ 1 ] Termine costante del coefficiente di
regressione A
B [7: Reg] [ 2 ] Coefficiente di regressione B
Per Regressione non Quadratica:
r [7: Reg] [ 3 ] Coefficiente di correlazione r
x
ˆ
[7: Reg] [ 4 ] Valore stimato di x
y
ˆ
[7: Reg] [ 5 ] Valore stimato di y
Solo per Regressione Quadratica (_+CX
2
):
C [7: Reg] [ 3 ] Coefficiente quadratico C dei
coefficienti di regressione
1
ˆ
x
[7: Reg] [ 4 ] Valore stimato di x1
2
ˆ
x
[7: Reg] [ 5 ] Valore stimato di x2
y
ˆ
[7: Reg] [ 6 ] Valore stimato di y
È possibile anche aggiungere un nuovo dato in qualsiasi momento.
L’apparecchio automaticamente ricalcola le statistiche ogni volta
che si preme [ = ] e si immette un nuovo valore dei dati.
108


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