Hello everyone,
Can anyone advise and/or provide a reference for the formula for calculating
the variance of a 12 month average of monthly totals where those totals are
expected to be correlated through time. So essentially, instead of the mean
of individual correlated observations, I am talking about the mean of
aggregate totals which are correlated and I want to calculate that mean and
its variance.
Any assistance is appreciated.
Thank you,
Dan
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