HP Calculatrice financière HP 10bII - Manuel (Page 141)

B: Calculs - Détails 141
σx
x
2
∑
x ∑ ( ) 2
n
-------------- –
n
------------------------------- =
σy
y 2
∑
y ∑ ( ) 2
n
-------------- –
n
------------------------------ =
r
xy ∑
x ∑ y ∑
n
--------------- –
x 2
∑
x ∑ ( ) 2
n
--------------
–  
 
y 2
∑
y ∑ ( ) 2
n
--------------
–  
 
---------------------------------------------------------------------------- =
m
xy ∑
x ∑ y ∑
n
--------------- –
x
2
∑
x ∑ ( ) 2
n
-------------- –
--------------------------------
=
b y mx – = xˆ
y b –
m
----------- = yˆ mx b = =