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F-22
•Régression linéaire
La formule de régression linéaire est y ҃ A ѿ Bx.
Exemple: Pression atmosphérique par rapport à la
température
Effectuez une régression linéaire
pour déterminer les termes de la
formule de régression et le coeffi-
cient de corrélation pour les
données indiquées ci-contre.
Utilisez ensuite la formule de
régression pour calculer la
pression atmosphérique à 18°C et
la température à 1000 hPa.
Entrez dans le mode REG (Régression linéaire)
q q 2 1
A m = (effacement de mémoire)
10
P 1003 S 15 P 1005 S
20 P 1010 S 25 P 1011 S
30 P 1014 S
(Coefficient de régression A) A q =
(Coefficient de régression B) A w =
(Coefficient de corrélation r) A J =
A N
xσ
n-1
A l
p
A d
yσ
n
A c
yσ
n-1
A q Coefficient de régression A
A w Coefficient de régression B
A e Coefficient de régression C
A u Coefficient de corrélation r
A O m
A b n
0 G Σx
2
0 H Σx
0 k n
0 h Σy
2
0 n Σy
0 o Σxy
0 M Σx
3
0 x Σx
2
y
0 y Σx
4
A M o
A A
xσ
n
Température
Pression
atmosphérique
10°C 1003 hPa
15°C 1005 hPa
20°C 1010 hPa
25°C 1011 hPa
30°C 1014 hPa
30.
00
997.4
00
0.56
00
REG
0.982607368
00
24


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