In an ANOVA experiment, you have,(adsbygoogle = window.adsbygoogle || []).push({});

group mean [itex]\overline{y}[/itex]_{.}

overall mean [itex]\overline{y}[/itex]_{..}

Are they independent?

Some samples overlap to calculate these means.

What is var([itex]\overline{y}[/itex]_{.}-[itex]\overline{y}[/itex]_{..}) ?

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# Is group mean and overall mean independent?

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