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Let:
= Σ
SX
2
SXY
Then:
B = b for LIN and LOG models, and
=
−
b
Y
M X
where
Equations Used in Chapter 14
Canadian Mortgages
PV
r
where:
N = total number of monthly payments
CI%YR = annual interest rate (as a percent)
PV = loan amount
PMT = monthly payment
FV = balloon payment
252 B: More About Calculations
File name : English-M02-1-040308(Print).doc
Σ
X
=
i
X
n
−
2
X
X
SX
(
)
2
i
= Σ
−
X
X Y
(
) (
i
i
SXY
=
M
SX
2
b
B = e
for EXP and PWR models,
SXY
=
CORR
SX
2
−
1
(1
= −
PMT
r
1
CI YR
%
6
=
+
−
1
200
Print data : 2004/3/9
Σ
Y
=
i
Y
n
= Σ
−
2
Y
Y
(
)
i
−
Y
)
×
SY
2
−
+
N
r
)
−
+
FV
r
(1
1
−
N
)
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