HP 12C Financial calculator - Manual (Page 191)

Appendix D: Formulas Used 191
File name: hp 12c_user's guide_English_HDPMBF12E44 Page: 191 of 209
Printered Date: 2005/7/29 Dimension: 14.8 cm x 21 cm
Interest Rate Conversions
C = number of compounding periods per year.
EFF = the effective annual interest rate as a decimal.
NOM = the nominal annual interest rate as a decimal.
Finite Compounding
1 1 − ⎟
⎠
⎞
⎜
⎝
⎛ +
=
C
C
NOM
EFF
Continuous Compounding
) 1 ( − = NOM e EFF
Statistics
Mean
n
x
x
∑
=
n
y
y
∑
=
Weighted Mean
∑
∑
=
w
wx
x
w
Linear Estimation
n = number of data pairs
Bx A y + = ˆ
B
A y
x
−
= ˆ
where ( )
n
x
x
n
y x
xy
B
2
2
∑
∑
∑ ∑
∑
−
⋅
−
=
x B y A − =