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I have historical sales data and used ARIMA for volume forecast. For Market Size (Value), can I use ARIMA or any other technique where I can use forecastd volume as Input which I had from ARIMA output?

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That is called a transfer function https://onlinecourses.science.psu.edu/stat510/node/75 might help .

Care should be taken to identify anomalies and to render them nul by incorporating empirically identied intervention variables.

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