To designate a spreadsheet (i.e., the results from one analysis) as an input spreadsheet, select the spreadsheet (e.g., ensure the spreadsheet has the focus) and select Input spreadsheet from the Data menu. Now one can specify an analysis, and Statistica uses the selected spreadsheet as the input spreadsheet. Note that if one switches back to another spreadsheet that has previously been designated as an input spreadsheet, it can still be used for analyses as well.

While user can specify any number of spreadsheets as input data files, only one file (per workbook) can be designated as the active input data file. This means that if all your spreadsheets are opened within one workbook, only one of them can be used for input data at a time. The active input data spreadsheet is highlighted in the workbook tree with a red square as shown above.