Is the attached formula for covariance wrong? Fairly certain it is but want to double check as it seems an odd mistake to make in a paper.
I am fairly certain it is wrong. The y_bar should be replaced with (y  y_bar) in the calculated of chisquared.
I am fairly certain it is wrong. The y_bar should be replaced with (y  y_bar) in the calculated of chisquared.
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