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    check for Heteroskedasticity?

    Hi guys, just a quick question - I need to find out whether there is Heteroskedasticity in my data. I did a scatterplot of standardised residuals on standardised predicted values, in order to check whether the data is "fanning out"... I don´t think so, but I just wanted to double-check with...
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    How to account for short-term trends in time-series data?

    Hi guys, I would like to find out which of my 10 independent variables (IVs) best accounts for the changes of my dependent variable (DV) at different points of time within the last 50 years. My problem: In order to explain the long-term trend of my DV over the last 50 years, I used multiple...