+ Reply to Thread
Results 1 to 2 of 2

Thread: Poisson model on moving averages: non-discrete

  1. #1
    Points: 3,286, Level: 35
    Level completed: 58%, Points required for next Level: 64

    Posts
    17
    Thanks
    1
    Thanked 0 Times in 0 Posts

    Poisson model on moving averages: non-discrete




    I have a model that is based on counts of cases. It follows a poisson distribution quite well but we are unhappy about the results of the model. In order to improve it we wanted to use moving averages of the counts instead of the counts themselves as the dependent variable, but this changes my variable into a non-discrete variable.

    I can still run the analysis in R, but I get a warning message regarding the non-discrete nature of the variable.

    Is this allowed? What are the things to look out for when using a poisson model with a non-discrete response variable?

    Many thanks!

  2. #2
    Points: 3,457, Level: 36
    Level completed: 72%, Points required for next Level: 43

    Posts
    156
    Thanks
    42
    Thanked 43 Times in 40 Posts

    Re: Poisson model on moving averages: non-discrete


    One solution is to use the moving total instead of the moving average. If you are using a simple moving average then this will just be a multiple of the average. This also shows that there really should not be a problem using the average itself. For many purposes, there are better smoothers than the simple moving average (e.g. Loess) but they are more complex

  3. The Following User Says Thank You to PeterFlom For This Useful Post:

    Johann Kotze (09-26-2015)

+ Reply to Thread

           




Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts






Advertise on Talk Stats