86 Forecasting
3.
Key in the first point of group I and press \(³)
4.
Key in the first point of group II and press \(³).
5.
Key in the first point of group III and press t.
6. Repeat steps 3, 4, and 5 for the balance of the data in each group. After executing step
5 the display shows how many sets of data have been entered.
7.
To fit the data to a Gompertz curve, press g(013t . The resultant display is
the curve constant "a". Constants "b" and "c" may be obtained by pressing :6 and
:7 respectively. The display may need adjusting to see significant digits.
8.
To calculate a projected value, key in the number of the period and press t.
9. Repeat step 8 for each period desired.
Example: The X-presso Company marked a revolutionary new coffee brewing machine
in 1990. Sales grew at a steady pace for several years, then began to slow. The sales
records for the first 9 years of the product's life were as follows.
Year Sales($K) Year Sales($K)
1 18 6 260
2 41 7 282
3 49 8 322
4 151 9 340
5 188
What are the projected sales volumes for this product in its 10th and 12th year? What is
the maximum yearly sales volume for this product if the 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:)
Group I Group II Group III
18 151 282
41 188 322
49 260 340
12c platinum / 12C
RPN Keystrokes
12c platinum
ALG Keystrokes
Display Comments
fCLEARH fCLEARH
0.00
18\ 18³
18.00
151\ 151³
151.00
282t 282t
1.00
41\ 41³
41.00
188\ 188³
188.00
322t 322t
2.00
49\ 49³
49.00
260\ 260³
260.00
340t 340t
3.00
Total number of entries.
To Next Page
Loading...
Need help?
General
Weight and Dimensions
