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st: anova account for the same individuals
From
"HUANG, LILING" <[email protected]>
To
"<[email protected]>" <[email protected]>
Subject
st: anova account for the same individuals
Date
Tue, 19 Nov 2013 19:22:47 +0000
Dear Statalisters,
I have a group of people (n=54), rating eight different ads. So, I have 432 observations in a long format dataset. After I ran ANOVA on the rating scores among ads (F (7, 424) = 13.37, p<0.001), I used pairwise comparisons (tukey hsd) to test whether rating scores are significantly different between ads. My question now is how I can account for the ratings come from the same 54 people rather than from 432 people in this analysis since the ratings from the same individual (id) among ads are dependent. Please let me know how specify this in my syntax below. Or should I use other statistic method?
anova score ad
tukeyhsd ad
Your prompt response to my inquiry will be greatly appreciated.
Liling Huang
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