Your sales vary from one day to the next. Is this just coincidence ? Is it chance ? No, it isn't.
Your commercial activity depends on the calendar (season, month, day of the week and of the month, holidays,...), on the weather (Temperatures, Precipitation,...),... And predicting the future allows you to avoid wasting time, while earning money and saving time! Our studies about COVID-19: predicting the evolution of the Coronavirus Is COVID-19 sensitive to temperature and to weather ? Our studies about Waiting Time Expectation: Disneyland Paris: Lines in DisneyLand Paris for the next few days Walt Disney World Resort in Florida: Lines in Walt Disney World for the next few days Disney Tokyo Resort in Japan: Lines in Disney Tokyo Resort Europa-Park: Lines forecasts in Europa-Park for the next few days Eiffel Tower: Lines forecasts for each the next few weeks in Eiffel Tower What are "weather sensitive" and "weather sensitivity" ? weather sensitivity
In whatever sector you work, your activity is weather sensitive: your sales depend on the weather and on the calendar.
Data analysis (looking back to the past and the present) allows predicting and planning for the future