Sum And Statistics; Forecasting - HP 17bII Owner's Manual

For the last year of depreciation, DB equals the remaining depreciable
value for the prior year.

Sum and Statistics

n ＝ number of items in the list.
x' ＝ an element of the sorted list.
TOTAL
MEDIAN
MEDIAN
W MN .

Forecasting

LIN y = B + Mx
EXP y = Be
LOG y = B + M ln x
PWR y = Bx
File name : English-M02-1-040308(Print).doc
=
x MEAN
Σ
i
'
=
x for odd n, where
j
' '
+
( x x )
+
j j 1
=
for even n, where
2
Σ
=
STDEV
( y - x )
Σ
=
i i
G SD .
y
Σ
i
RANGE ＝ MAX － MIN
Model Transformation
y = B + Mx
Mx
In y = ln B + Mx
y = B + M ln x
M
ln y = ln B + M ln x
B: More About Calculations 251
Print data : 2004/3/9
x
Σ
= =
i
x
n
+
n 1
=
j
2
=
j
−
2
( x x )
i
−
n 1
2
−
y x ( y x
Σ Σ
=
i i i
−
( y ) 1
Σ
i
X
i
x
i
x
i
ln x
ln x
n
2
2
)
Y
i
y
i
ln y
i
y
i i
ln y
i i