What type of ANOVA you want to run? One way anova command is oneway DependentVariable(scores) IndependentVariables(categorical)
It will give you an output of between group and withing groups summaries and F-test value. if it is significant that mean significant mean differences between groups.
Twoway anova is for testing the interaction between two independent variables. the command is anova DependentVariable FirstIndependentVariable##SecondIndependentVariable
you can combined it as well for example anova DependentVariable FirstIndependentVariable secondIndependentVariable##thirdIndependentVariable
output is same except for the interaction term.
several other post hoc options are there too. you can type help oneway or help anova to see other options in stata. I am using Stata 12. I am quite sure it also same in Stata 11
Thank you Ankit let me try it, its my first time on stata platform so i was confused. i would like to do a two way anova
I am trying the suggestion Ankit advised me but this is what i am getting.
anova trapsite april## june## septembe
> r## december
'trapsite' found where numeric variable
> expected
r(7);
I am trying to use the help section but am failing to pick the error.
trapsite variable must be numeric and only interaction term will had ##. other dependent variable will be as it is. for example anova trapsite april june september##december if you interest in interaction in only september and december
I hope it works this time
the variable trapesite must be numeric, how do i change the variable properties so they may be numeric?
thank you i managed to work around my data using the clues. I did use
destring trapsite, gen(trapsite2) ignore("location ")
destring april, replace
destring june, replace
destring september, replace
destring december, replace
with this now i can perform oneway anova. Is it possible to perform anova with 4 replications?
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