rate of change

  1. F

    Quantifying rate & direction of change over time

    Hello, I'm not quite sure where to post this so hopefully it's ok here. With some timeseries data, I have identified certain events that I hypothesise will predict direction changes in the data. If I see event A I expect a rise in the signal, but if I see event B I expect a decline. I assume...
  2. A

    Determining significant (or otherwise) difference between 2 rates of change

    Dear Users, I am trying to determine the statistical significant difference (or otherwise) between 2 series of data and am unsure how to proceed. It is rates of admission for arthritis between 2 countries. Country A the average rate of increase per year is 8.1%, and for Country B the...