I'm not sure what exactly Xi means. Is it the sum of a single data point minus the sample mean squared?

Thanks

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- Jun 26th 2009, 12:12 PMjschlarbSample variance equation question

I'm not sure what exactly Xi means. Is it the sum of a single data point minus the sample mean squared?

Thanks - Jun 26th 2009, 02:15 PMmatheagle
the data is

You're summing i from 1 to n, and it's , not X.

OR