Use only recent data. What counts as recent varies between industry sectors. For example, a supermarket would count three-month-old data as getting a bit old. A car manufacturer would see...

Use only recent data. What counts as recent varies between industry sectors. For example, a supermarket would count three-month-old data as getting a bit old. A car manufacturer would see three-year-old data as usable, while 20â•‚Â year-old data may be acceptable for a mortgage company.