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EigenCake
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One is:
http://en.wikipedia.org/wiki/Chi-squared_distribution
where at the bottom of the page, chi-square = sum of something devided by variance.
However, here:
http://www.napce.org/documents/research-design-yount/23_chisq_4th.pdf
where the chi-square formula is that the sum of the same thing devided by expectation value.
Which formula is right then?
http://en.wikipedia.org/wiki/Chi-squared_distribution
where at the bottom of the page, chi-square = sum of something devided by variance.
However, here:
http://www.napce.org/documents/research-design-yount/23_chisq_4th.pdf
where the chi-square formula is that the sum of the same thing devided by expectation value.
Which formula is right then?
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