Parameters
name of parameter | content | name of parameter | content |
H | moving average | S | moving sum |
I | counter | X | starting point (x) |
J | counter | Y | starting point (y) |
K | counter | Yscl | scale of |
M | number of divisions | B | input of number of divisions |
Exercise 
Find the moving average every three months (number of divisions: 3) from the following table of monthly sales.
Month | Jan. | Feb. | Mar. | Apr. | May. | Jun. | Jul. | Aug. |
|
|
|
|
|
|
|
|
|
Sales[$] | 300 | 326 | 323 | 344 | 300 | 401 | 398 | 450 |
|
|
|
|
|
|
|
|
|
On the graph, Xmax = 8, Ymin = 300, and Ymax = 450.
Set up condition: decimal point in Float Pt Mode.
2nd F 
SET UP 
C *
1*
CL
1
2
Step
Enter statistical data into L1.
Specify the programme mode. Select the title MVIN AVG.
Key Operation | Display |
| (When using |
STAT 
A * ENTER
3 
0 
0 
ENTER 
3 
2 
6
ENTER 
3 
2 
3 
ENTER
3 
4 
4 
ENTER 
3 
0 
0
ENTER 
4 
0 
1 
ENTER
3 
9 
8 
ENTER 
4 
5 
0
ENTER
2nd F 
PRGM 
A *
3 | Enter the number of divisions(3). |
| |
|
|
3
ENTER
17
