137
Chapter 8: Statistics & Regression Calculations
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 )
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.
Time (min)
2
3
4
5
6
7
8
9
10 10.5 11 11.5 12 12.5
Temperature
38.4 46.4 54.4 62.5 69.6 76.1 82.4 88.6 93.4 94.9 96.5 98.2 99.1 100
(°C)
Note:
When selecting a regression equation from 02 to 10 and calling to
screen, “Rg” is automatically added to the equation to indicate a
regression equation. For example “Rg_ax+b” will be displayed
when selecting “02 ax+b”.
The following table shows the relationship between the time and
temperature of water, when heating a beaker filled with water.
Enter a data in a
list table
Plotting the data
Selecting the
graph type
Using the
regression
functions
