title: What is the minimum sample size required for time series forecasting with quarterly frequency?
body: <p>I'm having a quarterly time series with 2-3 years of data (totally 8-12 data points - varies from case to case basis). I would like to understand the minimum sample size required to perform time series forecasting on quarterly interval series.</p>
  
  <p>I have tried with 2 - 3 years of quarterly data and forecasted but I would like to know the recommended sample size for quarterly frequency.</p>