Using Statistics

One or more PRAP analysed resonance files can be added to a PRAP compound file (of extension '.PZC'). If each of these resonance files is of different samples of the same material, the compound file will provide the average of the determined material properties along with the standard deviation of these properties given as the uncertainty in each property.

The average of each available property x is determined from;

Average

where N is the number of available results for each property.

The standard deviation of each property is determined from;

Standard Deviation

Note that each included analysed resonance spectrum should generally be of the same resonance mode using the same order resonance peak. Other resonance modes and peaks can be used if frequency dispersion is to be ignored.

To study the statistics of your analysis results;

Open a new compound file with the 'New Compound File' command of the File menu.
Using the 'Add PZF File' command of the File menu, add the spectra you wish to study.
Ensure that each spectrum has been analysed. You can do this by displaying each included resonance scan with the 'Display Resonance Scan' menu command from the Window menu.
Select the 'Statistics' command from the Tools menu.

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