Forecasting With Exponential Smoothing - HP 12c Solutions Handbook

present trend continues? What annual sales rate would the curve have
predicted for the 5th year of the product's life? (Arrange the data as
follows:)
Keystrokes
CLEAR
18
151
282
41
188
322
49
260
340
13
6
7
10
12
100
5

Forecasting with Exponential Smoothing

A common method for analyzing trends in sales, inventory and securities
is the moving average. Exponential smoothing is a version of the weighted
moving average which is readily adaptable to programmable calculator
forecasting.
Group Group
I II
18 151
41 188
49 260
Display
0.00
18.00
151.00
1.00
41.00
188.00
2.00
49.00
260.00
3.00
0.004
0.65
373.92
349.09
363.36
373.92
202.60
87
Group
III
282
322
340
Total number of entries.
a
b
c
Sales in 10th year, (in $K).
Sales in 12th year, (in $K).
Maximum annual sales (after very
long product life).
Sales in 5th year (actual sales
were $188K).