Lecture 4: Principles of Psychometrics: Reliability II - jhsph ocw
Lecture 4: Principles of Psychometrics: Reliability II - jhsph ocw
Lecture 4: Principles of Psychometrics: Reliability II - jhsph ocw
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Unique Rater Design<br />
3) Within Mean Score Variance, steps in Stata<br />
a) calculate mean scores for each individual<br />
*e.g. egen meanid = rmean(score1 score2 score3)<br />
b) calculate deviation <strong>of</strong> rater from individual mean<br />
*e.g. gen wsquarei = (score1-meanid)^2 + (score2-meanid)^2<br />
+ (score3- meanid)^2<br />
c) add up deviations in (b) across all individuals<br />
*e.g. egen wsquare =sum(wsquarei)<br />
d) divide sum <strong>of</strong> squares by degrees <strong>of</strong> freedom<br />
*e.g. display wsquare/I*(m-1) =
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