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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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Are the true means for each group different from each other?<br />

score1<br />

-80 -60 -40 -20 0 20 40 60 80 100<br />

1 2 3<br />

group<br />

Compare amounts <strong>of</strong> variance within & between groups

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