In the simple exponential smoothing forecasting model you need at least 100 observations to set the weight.

Question

Quizplus · Accepted Answer

The number of observations needed to set the weight in simple exponential smoothing forecasting model depends on the desired level of smoothing and the characteristics of the data being used. Generally, more observations will result in a better estimate of the smoothing parameter, but fewer observations can still be used with appropriate adjustments to the model. Therefore, there is no set minimum number of observations required to set the weight.

In the Simple Exponential Smoothing Forecasting Model You Need at Least