1- Check again the stationarity of the time series using augmented Dickey-Fuller (ADF) test . 2- Try to increase the number of predictors ( independent variables). 3- Try to increase the sample size (in case of monthly data, to use at least 4 years data.
Read moreHow do you predict in Python?
Python predict() function enables us to predict the labels of the data values on the basis of the trained model. The predict() function accepts only a single argument which is usually the data to be tested.
Read moreIs ARIMA a predictive model?
ARIMA, short for ‘AutoRegressive Integrated Moving Average’, is a forecasting algorithm based on the idea that the information in the past values of the time series can alone be used to predict the future values.
Read moreWhat package is auto Arima in Python?
In this article we will build an Auto ARIMA model using a great package called ‘Pyramid’ . Please read the below two articles first if you are not familiar with the time-series modeling and ARIMA in particular.
Read moreHow do you evaluate ARIMA model in python?
Evaluate an ARIMA Model
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