In the simple exponential smoothing forecasting model you need at least 30 observations to set the tracking alpha.

Question

Quizplus · Accepted Answer

The number of observations needed to set the tracking alpha in the simple exponential smoothing model can vary depending on the data and the level of accuracy desired. While 30 observations may provide a decent estimate of alpha, it is not a hard and fast rule that applies in every case.

In the Simple Exponential Smoothing Forecasting Model You Need at Least