Texas Instruments BA II PLUS - Manual (Page 94)

90 Appendix — Reference Information
Sum-of-the-years’-digits depreciation
First year:
Last year or more: DEP = RDV
Declining-balance depreciation
where: RBV is for YR - 1
First year:
Unless ; then use RDV Q FSTYR
If DEP > RDV , use DEP = RDV
If computing last year, DEP = RDV
Statistics
Note: Formulas apply to both x and y .
Standard deviation with n weighting ( s
x
):
LIF 2 YR – FSTYR
)
– + CST
( ×
SAL
)
–
LIF
( (
LIF
(
1
) )
+
Ч
2
) ч
------------------------------------------------------------------------------------------------------
LIF CST SAL –
( ) ×
LIF
(
LIF
( Ч
1
)
+
( ) 2 ) ч
------------------------------------------------------------ FSTYR
×
RBV DB%
×
LIF 100
×
-------------------------------
CST DB%
×
LIF 100
×
------------------------------- FSTYR
×
CST DB%
×
LIF 100
×
------------------------------- RDV
>
1 2
⁄
x 2
x
∑
⎝ ⎠
⎛ ⎞ 2
n
-------------------- –
∑
n
-----------------------------------------