Can we use SARIMA model for 28 Observations of monthly data?

18 September 2021 1 1K Report

I have monthly data and I fount seasonality in my data. I want to apply SARIMA but i am not sure that on 28 observation I can use SARIMA or not? kindly share any reference if there can apply SARIMA on 28 monthly observations.

Bijoy Dutta

Tanzila Noor , if you are using SARIMA Model you need more number of data points, in order to be sure about the presence of seasonality. which type of data are you using? It will be best for you, if you first remove the seasonality from the data, then you can use ARIMA Model too, which will be easier. First plot the data in frequency domain and then remove the seasonality pattern by removing that component.

Regards,

Bijoy Dutta

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