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ChemOffice.Com - CambridgeSoft

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Administrator<br />

Equation<br />

The Equation Tab displays the equation that the<br />

data is fit to under Parameterized Equation. The<br />

x and y variables define the x and y coordinates for<br />

the fit curve. The values for other parameters in the<br />

equation are assigned to fit the data the best. The<br />

final values are recorded in the Parameter Values<br />

table.<br />

information found under this tab will give the user<br />

information to determine if the data has a<br />

meaningful fit to the curve.<br />

Values<br />

The Values Tab displays the actual data point<br />

values to which the equation found under the<br />

Equation Tab is fit.<br />

Data Statistics<br />

Various statistics defining the data are found under<br />

the Data Statistics Tab. Statistics for both the X<br />

and Y values are recorded.<br />

Fit Statistics<br />

The Fit Statistics Tab records statistics defining<br />

how well the Equation, found under the Equation<br />

Tab, fits the data found under the Values Tab. The<br />

Invalidating Data Points<br />

Any data point plotted can be removed from the<br />

plot. This may be useful in removing outliers in<br />

order to produce a better curve fit.<br />

When viewing a plot (for more information please<br />

see “Plotting Data using a Graph Template” on<br />

page 130), you can exclude and include data points.<br />

By default, active data points appear in blue,<br />

inactive data points in red. All data points are active<br />

by default.<br />

To exclude an active datapoint from the fit or<br />

include an inactive data point in the fit:<br />

1. Find the point in the plot and right-click.<br />

2. Select the appropriate options (Exclude from<br />

Fit or Include in Fit).<br />

NOTE: Points invalidated from the graphing interface are<br />

also marked as invalid in the data tables, therefore excluding<br />

them from calculations.<br />

Graphing Options<br />

There are three tabs in the Graph Options dialog:<br />

• General - define general plotting characteristics<br />

such as error bars, grid lines, and graph<br />

extensions<br />

132•BioAssay<br />

<strong>CambridgeSoft</strong><br />

Protocols

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