HP 12c Platinum - Page 77

Forecasting 77
Program Instructions:
1. Key in the program.
2.
Press fCLEARH. Key in the number of elements, m, and press ?0.
3.
Key in the first data point and press ?1.
4.
Key in the second data point and press ?2.
5. Continue as above, keying in and storing each data point in its appropriate register
until m data points have been stored.
6.
Press g(000t to calculate the first moving average.
7.
Key in the next data point and press t to calculate the next moving average.
8. Repeat step 7 for each new data point.
Example 2: Calculate the 3-element moving average for the data given in example 1.
Your modified program listing will look like this:
12c platinum / 12C
RPN KEYSTROKES
DISPLAY
12c platinum
ALG KEYSTROKES
DISPLAY
fs fs
fCLEARÎ
000,
fCLEARÎ
000,
:1
001, 45 1
:1
001, 45 1
:2
002, 45 2
+
002, 40
?1
003, 44 1
:2
003, 45 2
+
004, 40
?1
004, 44 1
:3
005, 45 3
+
005, 40
?2
006, 44 2
:3
006, 45 3
+
007, 40
?2
007, 44 2
:0
008, 45 0
z
008, 10
z
009, 10
:0
009, 45 0
t
010, 31
³
010, 36
?3
011, 44 3
t
011, 31
g(001
012,43,33,001
?3
012, 44 3
fs
g(001
013,43,33,001
fs
12c platinum / 12C
RPN Keystrokes
12c platinum
ALG Keystrokes
Display Comments
fCLEARH fCLEARH
0.00
3?0 3?0
3.00
211570?1 211570?1
211,570.00
112550?2 112550?2
112,550.00
190060?3 190060?3
190,060.00
g(000t g(000t
171,393.33
3-month average for March.
131760t 131760t
144,790.00
3-month average for April.