this is a question from business forecasting:

Explain carefully what characteristics ofthe original data led one of these models to minimize the root-mean-squarederror. (RMSE)

what leads to minimisation of RMSE if the orginal data of sales is some set of data

e.g:

sales of a restaurant

2017 - 6000

2018- 10000

2019 - 5000

2020 - 4000

model used is simple exponential smoothing