HP 10bII User Manual page 135

Statistics
= -------
=
Sx
Sy =

– --------------
x = ------------------------------ -
r = --------------------------------------------------------------------------- -
2
x –
m =
b = y mx –
y
y = ------ - =

– --------------
------------------------------ -
–
2
y

y – ------------- -
----------------------------- -
–
2
y = ----------------------------- -
x y
xy – -------------- -
n
2
x
2
------------- - y –
n
x y
xy – -------------- -
n
------------------------------- -
2
x
2
x – ------------- -
n
y b –
x ˆ y ˆ
= ---------- - =
m
B: More About Calculations 135
--------- -
2
2
y

y – ------------- -
2
y
------------- -
n
mx + b