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Thanks!!!

My question is how to represent 't' in the formula?

For example, i need to know the result of the series t*yt

so when yt=y1, it is y1*1, and when yt=y2, it is y2*2

How can i programme that t?

Thanks!

I would like to calculate a statistic for a series y, containing T observations and the statistics, say, following r1=T*t*(yT)*sum(yt-ybar)*(y1) where (yT) represents the last observation of the series, (y1) is the first observation, ybar is the mean of the series and t represents for the time of ea...