Sum and statistics, Forecasting – HP 17bII+ User Manual
Page 251
B: More About Calculations 251
File name : English-M02-1-040308(Print).doc Print data : 2004/3/9
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.
1
2
1
for odd n, where
2
(
)
for even n, where
2
2
(
)
1
( -
.
i
i
j
j
j
i
i
i
x
TOTAL
x
MEAN
x
n
n
MEDIAN
x
j
x
x
n
MEDIAN
j
x
x
STDEV
n
y
x
W MN
+
=
=
=
+
′
=
=
′
′
+
=
=
Σ
−
=
−
=
Σ
Σ
Σ
2
2
)
(
)
.
(
)
1
i
i
i
i
i
y x
y x
G SD
y
y
−
=
−
Σ
Σ
Σ
Σ
RANGE
＝ MAX － MIN
Forecasting
Model
Transformation
X
i
Y
i
LIN
EXP
LOG
PWR
y = B + Mx
y = Be
Mx
y = B + M ln x
y = Bx
M
y = B + Mx
In y = ln B + Mx
y = B + M ln x
ln y = ln B + M ln x
x
i
x
i
ln x
i
ln x
i
y
i
ln y
i
y
i
ln y
i