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Bloody statistics again...

  • 19-03-2010 1:52pm
    #1
    nearly_there
    Closed Accounts Posts: 39 ✭


    Ok its that time of year again where Im beginning to write up my thesis. Statistics, my old enemy is back to haunt me


    Im just looking for a bit of advice re this. Im using SPSS which is very user friendly but just to make sure Id like a pointer please.

    I have 14 time points, at each of these I have a measurment taken from 6 different treatments. This is an ANOVA right?

    and i want to compare each at the end so a tukey test? assuming data is normal/normalised.

    but its not a two-way parametric ANOVA. does a 3/4/5 etc way anova exist?


Comments

  • #2
    2Scoops
    Registered Users, Registered Users 2 Posts: 1,845 ✭✭✭2Scoops


    nearly_there wrote: »
    I have 14 time points, at each of these I have a measurment taken from 6 different treatments. This is an ANOVA right?
    Yes, assuming scale variables.
    nearly_there wrote: »
    and i want to compare each at the end so a tukey test? assuming data is normal/normalised.

    Choice of test depends on many things; you might want to pick the one best suited to the mean comparison in question, repeated measure, treatment effect, variance etc.
    nearly_there wrote: »
    but its not a two-way parametric ANOVA. does a 3/4/5 etc way anova exist?

    You have a 2-way with repeated measures on time - a mixed model of sorts. There are such things as 3-, 4- and 5- way ANOVAs but they are so difficult to interpret that you don't see them much past 3-way. Make sense of a 5-way interaction anyone?? :0 :D


  • #3
    nearly_there
    Closed Accounts Posts: 39 ✭nearly_there


    Thanks for your reply!


    I ended up doing many 2-way ANOVAs. Time consuming but I really knew what I was doing by the end of it!

    Am getting to grips with SPSS now, but no doubt will be back for more help in time !


  • #4
    tayto potatoe
    Closed Accounts Posts: 2 ✭tayto potatoe


    Hey,

    I need help on an SPSS assignment. Am looking for an hour or so tutorial, will pay.

    Thanks


  • #5
    Ostrom
    Registered Users, Registered Users 2 Posts: 3,483 ✭✭✭Ostrom


    What exactly are you doing?


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