User Manual

continues? What annual sales rate would the curve have predicted for the 5th
year of the product's life? (Arrange the data as follows:)
Group
I
Group
II
Group
III
18 151 282
41 188 322
49 260 340
Keystrokes Display
CLEAR
0.00
18
18.00
151
151.00
282
1.00
41
41.00
188
188.00
322
2.00
49
49.00
260
260.00
340
3.00 Total number of entries.
13
0.004
a
6
0.65
b
7
373.92
c
10
349.09 Sales in 10th year, (in $K).
12
363.36 Sales in 12th year (in $K).
100
373.92 Maximum annual sales (after very long product life).
5
202.60 Sales in 5th year (actual sales were $188K).
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.