X11 Procedure
SSPAN Statement
SSPAN options;
The SSPAN statement applies sliding spans analysis to determine the suitability of seasonal adjustment for an economic series.
The following options can appear in the SSPAN statement:
- NDEC=n
specifies the number of decimal places shown on selected sliding span reports. This option has no effect on the precision of the variables values in the OUTSPAN output data set.
- CUTOFF=value
gives the percentage value for determining an excessive difference within a span for the seasonal factors, the seasonally adjusted series, and month-to-month and year-to-year differences in the seasonally adjusted series. The default value is 3.0. The use of the CUTOFF=value in determining the maximum percent difference (MPD) is described in the section Computational Details for Sliding Spans Analysis. Caution should be used in changing the default CUTOFF=value. The empirical threshold ranges found by the U.S. Census Bureau no longer apply when value is changed.
- TDCUTOFF=value
gives the percentage value for determining an excessive difference within a span for the trading-day factors. The default value is 2.0. The use of the TDCUTOFF=value in determining the maximum percent difference (MPD) is described in the section Computational Details for Sliding Spans Analysis. Caution should be used in changing the default TDCUTOFF=value. The empirical threshold ranges found by the U.S. Census Bureau no longer apply when the value is changed.
- NOPRINT
suppresses all sliding span reports. For more information about sliding span reports, see the section Computational Details for Sliding Spans Analysis.
- PRINTALL
prints the summary sliding spans report S 0 through S 6.E, along with detail reports S 7.A through S 7.E.