HP 17bII manual Sum and Statistics, Forecasting, Model Transformation

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.

Σxi

TOTAL = Σxi

MEAN

= x

=

n

MEDIAN = xj′

for odd n, where

j =

n + 1

2

MEDIAN =

(xj′ + xj + 1′ )

for even n, where

j =

n

2

2

STDEV =

Σ(xi

−

x

)2

n

− 1

W.MN =

Σ

(yi - xi )

G.SD =

Σyi

xi2 − (Σyi )

x

2

Σyi

(Σyi )

− 1

RANGE ＝ MAX － MIN

Forecasting

	Model	Transformation	Xi	Yi
LIN	y = B + Mx	y = B + Mx	xi	yi
EXP	y = BeMx	In y = ln B + Mx	xi	ln yi
LOG	y = B + M ln x	y = B + M ln x	ln xi	yi
PWR	y = BxM	ln y = ln B + M ln x	ln xi	ln yi

	B: More About Calculations 251
File name : 17BII-Plus-Manual-E-PRINT-030709	Print data : 2003/7/11