HP 12c Platinum - Page 79

Forecasting 79
12c platinum / 12C
RPN KEYSTROKES
DISPLAY
12c platinum
ALG KEYSTROKES
DISPLAY
4
018, 4
+
018, 40
z
019, 10
~
019, 34
t
020, 31
z
020, 10
:2
021, 45 2
4
021, 4
Z
022, 23
³
022, 36
t
023, 31
t
023, 31
?5
024, 44 5
:2
024, 45 2
g(001
025,43,33,001
Z
025, 23
fs t
026, 31
?5
027, 44 5
g(001
028,43,33,001
fs
REGISTERS
n: Unused i: Unused PV: Unused PMT: Unused
FV: Unused R
0
: n R
1
: X
1
R
2
: X
2
R
3
: X
3
R
4
: X
4
R
5
: X
5
R
6
-R
.6
: Unused
Program Instructions:
1. Key in the program.
2.
Press fCLEARH.
3. Key in the quarterly sales figures starting with the first quarter:
a. Key in 1st quarter sales and press ?1.
b. Key in 2nd quarter sales and press ?2.
c. Key in 3rd quarter sales and press ?3.
d. Key in 4th quarter sales and press ?4.
e. Key in the 1st quarter sales for the next year and press ?5.
4.
Press g(000t to calculate the centered moving average for the 3rd quarter of
the first year.
5.
Press t to calculate the seasonal variation for this quarter.
6.
Key in the next quarter's sales and press t to calculate the moving average for the
next quarter.
7.
Press t to calculate the seasonal variation.
8. Repeat steps 6 and 7 for the balance of the data.