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EL-9900 Graphing Calculator
3
DisplayStep
Key Operation
1
2
Enter statistical data into L1.
Exercise
Find the moving average every three months (number of divisions: 3) from the following
table of monthly sales.
On the graph, Xmax = 8, Ymin = 300, and Ymax = 450.
Set up condition: decimal point in Float Pt Mode.
Parameters
name of parameter
H
I
J
K
M
content
moving average
counter
counter
counter
number of divisions
name of parameter
S
X
Y
Yscl
B
content
moving sum
starting point (x)
starting point (y)
scale of y-axis
input of number of divisions
Month
Sales[$]
Jan.
300
Feb.
326
Mar.
323
Apr.
344
May.
300
Jun.
401
Jul.
398
Aug.
450
Specify the programme mode.
Select the title MVIN AVG.
Enter the number of divisions(3).
17
SET UP
2nd F
CL
1
C
3
ENTER
8
ENTER
ENTER
STAT
A
PRGM
A
93
1
ENTER
04
4
ENTER
43
3
ENTER
23
0
ENTER
03623
003
05
4
ENTER
ENTER
ENTER