Appendix D: Formulas Used 191

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

NOM C

EFF = ⎜1+

 

1

 

C

 

Continuous Compounding

EFF = (eNOM 1)

Statistics
Mean

 

= y

x

= x

y

 

n

 

n

Weighted Mean

xw = wx

w

Linear Estimation

n = number of data pairs

yˆ = A + Bx

xˆ = y A B

xy x y

where B = ( n )

x2 x 2 n

A = y Bx

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