How are Missing Data handled in STATISTICA?
Specifying Missing Data codes. A Missing Data code, that is, a value which signifies that there is no data for a particular case and variable (displayed as a blank cell in the spreadsheet) can be specified separately for each variable. To change the code, double-click on a variable name in the spreadsheet to access the Variable Specifications dialog for that variable. Alternatively, you can press the Combined Variable Specifications button on the spreadsheet toolbar to access a combined table for all variables (see above). The default Missing Data code in STATISTICA (used when new files are created, new variables are added, or data are imported) is -9999. Processing cases with Missing Data. The way in which missing data are handled when processing data can be adjusted individually for each analysis (see the field MD deletion in most analysis-definition dialogs). Whenever applicable, the user has the choice to eliminate them from calculations in a casewise or pairwise manner, substitute
Specifying missing data codes. A missing data code, that is, a value that signifies that there is no data for a particular case and variable (displayed as a blank cell in the spreadsheet), can be specified separately for each variable. To change the code, double-click on a variable name in the spreadsheet to access the Variable specifications dialog for that variable. Alternatively, click the Vars toolbar button and select All Specs from the resulting menu to display the Variable Specifications Editor dialog for all variables. The default Missing Data code in STATISTICA (used when new files are created, new variables are added, or data are imported) depends on the variable type being used. Processing cases with missing data. The way in which missing data are handled when processing data can be adjusted individually for each analysis (see the MD deletion group in most analysis definition dialogs). Whenever applicable, you have the choice to eliminate them from calculations in a casewise
