| 1. |
Enter your experimental data into the calculator's list memory.
(This example uses the same data from the Entering
List Data sample.) |
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| 2. |
Plot the experimental data. |
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| 3. |
Perform an appropriate regression on the
data. |
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| 4. |
Press [Y=] to pull up the calculator's equation screen. |
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| 5. |
With the cursor positioned to enter a new equation, press the [VARS]
key to access the calculator's variables menu. |
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| 6. |
Chose 5:Statistics to pull up the statistics variables
sub-menu. |
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| 7. |
Highlight EQ to display all the statistical equation
variables. These variables (a, b, c, r, etc.) hold all the numbers
determined by the most recent regression. |
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| 8. |
Chose 7:RegEQ to insert the entire regression equation
in the “Y=” screen. (Notice that the regression equation retrieved
from memory actually carries more decimal places than the regression data
originally displayed.) |
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| 9. |
Press [GRAPH] to display your data plot with the regression
equation superimposed on it. The close agreement between the experimental
data points and the parabola determined by the quadratic regression is
a strong indication that there is in fact a quadratic relationship between
the distance and time values. |
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