How do I retrieve statistics and paste them to Excel

You can always view a set of standard descriptive statistics for any SigmaPlot worksheet by either pressing F6, or by choosing the View menu Statistics command. You can also press the View Statistics button in the standard toolbar.

Once the statistic worksheet is open, you can simply copy and paste your data to Excel or whatever other application you want. You can also export this data to a large number of file formats using the File menu Export command.