Sharp EL-9900 User Manual

1. Press 

S A E.

2. Enter the time into list 1 (L1).

3. Enter the temperature into list 2 (L2).

1. Press 

[ A E.

2. Press 

E to turn on the plotting.

3. Press 

} and ' to select XY of DATA menu and press

E.
Freq will change to ListY and set L2 to ListY.

1. Press 

} to move the cursor to GRAPH.

2. Press 

[ G and 2 (2 Scattr+) to set the graph

type to scatter and point type to “

+

”.

3. Press 

Z A 9 (9 Stat) to plot the scatter diagram

for this data.

• Selecting 

A 9 in the ZOOM mode allows for quick

graphing in an optimum range since window setting values of

the graph plotting screen are automatically set using the list

data.

1. Press 

# C S D 0 4 (04 Rg_x

).

2. Press 

( @ 1 , @ 2 , @

z A E A 1 ).
If you enter Y1 as the last variable, the obtained formula will

automatically be set to the formula Y1.

3. Press 

E.

The regression formula and parameters will be displayed on

the screen.

4. Press 

G.

The calculator will draw the scatter diagram using the deter-

mined parameter values.

5. If there is a large difference between the regression curve and

plotted dots, change the regression curve and repeat the

above procedures.