The statistical models only deal with measurable data, but there are several other aspects that influence the final result and need to be considere...

The statistical models only deal with measurable data, but there are several other aspects that influence the final result and need to be considered in the forecast. Therefore, a good forecasting system should consist of:
A Data collection; statistical treatment; validation of results by PCP; disclosure of results.
B Sales data collection; statistical treatment; collection of various information; consolidation of data in a forecast meeting.
C Sales data collection; statistical treatment; collection of various information; validation of data by the commercial area.
D Data collection; statistical treatment; disclosure of results.


A Data collection; statistical treatment; validation of results by PCP; disclosure of results.
B Sales data collection; statistical treatment; collection of various information; consolidation of data in a forecast meeting.
C Sales data collection; statistical treatment; collection of various information; validation of data by the commercial area.
D Data collection; statistical treatment; disclosure of results.