HP 10bII+ User Manual page 171

Depreciation
For the given year number (YR) and with Factor (FACT) as a percentage:
–
BASIS SALV
SL = ------------------------------------ -
LIFE
BASIS SALV –
= ----------------------------------------------- -
SOYD
(
LIFE
×
---------------------------
LIFE
FACT
×
-------------- -
BASIS
100
-------------------------------------- -
DB =
LIFE
For the last year of depreciation, DB equals the remaining depreciable value for the prior year.
Statistics
× ( )
– +
LIFE YR 1
)
+ 1
2
( )
YR 1 –
⎛ ⎛ ⎞ ⎞
FACT
-------------- -
⎝ ⎠
⎜ ⎟
100
× ⎜ ⎟
1 – -------------------- -
⎜ ⎟
LIFE
⎝ ⎠
∑
x
,
x
= -------- -
n
Sx =
Sy =
∑
(
2
∑
x
– --------------- -
σx
= ----------------------------------
n
r = ----------------------------------------------------------------------------------- -
⎛
∑
2
⎜
x
⎝
m =
= –
b y mx
∑ ∑
xy
y
,
x
y = -------- - = -----------
w
n
∑
y
2
∑
( )
x
2
∑
x
– --------------- -
n
----------------------------------
n 1
–
2
∑
( )
y
2
∑
y – --------------- -
n
--------------------------------- -
n 1
–
2
∑
) (
x
y
2
∑
y – --------------- -
n n
σy
= --------------------------------- -
n
∑ ∑
x y
∑
xy – ------------------
n
2 2
∑ ∑
( ) ( )
⎞ ⎛ ⎞
x y
∑
2
⎟ ⎜ ⎟
– --------------- - y – --------------- -
⎠ ⎝ ⎠
n n
∑ ∑
x y
∑
–
xy ------------------
n
------------------------------------ -
2
∑
( )
x
∑
2
x – --------------- -
n
–
y b
x ˆ y ˆ
= = +
---------- - mx b
m
Appendix B: More About Calculations
2
)
V