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    Box Cox Transformation on time series

    Hi, I want to apply box cox transformation on my time series. I was just wondering can I apply the transformation on any time series or do i have to fix up the time series prior to. I have a non stationary time series with deterministic trends.. would i have to make it stationary first or no...
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    Correlation between two non stationary time series

    Hey everyone, I'm trying to figure out if there is significant correlation between two non stationary time series (e.g. temperature on a a given day and icecream sales). Could someone please propose a method. There are so many different methods i read about online im not sure which to go...