Buchi DuMaster D-480, Руководство по эксплуатации

Страница: 65 / 354

Operating instructions DuMaster D-480 ©BÜCHI Labortechnik AG
4 - Understanding the instrument and planning its use 65
The statistics view displays the element content percentages of all samples in a series, grouped by
sample name.
For each group of samples, the following calculated statistical values per element are also displayed:

Percentage mean value of the element

The absolute standard deviation of the mean values

The relative standard deviation of the mean values

Difference (Delta) of the highest and lowest content of the group
You can exclude individual samples and/or values of a group from the calculation of statistical values
or include them again.
Calibration view
If your series includes samples previously defined as calibration samples, you can use them to
calculate calibration coefficients. You can define and determine up to two calibration ranges
according to which polynomial degree you want to determine the calibration curve.
In this case, the calibration view displays the following information:

For each defined calibration range a graph display of the calibration curve optimized for the
respective calibration samples.

The calibration coefficients computed according to the selected polynomial degree.

The correlation coefficient for the depicted calibration curve that allows you to assess the quality
of calibration.