Sentences with phrase «strong autocorrelation»

It's just an artifact of the noise model; a completely normal, natural, expected effect of random variation, enhanced here by strong autocorrelation.

The brief time span of the most recent data, and the strong autocorrelation of temperature time series, combine to make the error range considerable.

Not exact matches

First - differencing, on the other hand, introduces very strong lag - 1 autocorrelation, which I seriously doubt you accounted for.

But as I said, even when I jack up the noise autocorrelation it still doesn't give a strong enough PC # 1 to come close to that of MBH98.

While autocorrelation does suggest some justification for 74, 37y periods, it would be hard to «tweak» the strong 60y to conform to 151y saw tooth.

I calculated the Durbin Watson statistic (DW) for autocorrelation for the GISS time series 1979 - 2007 (using the residuals from the anomaly regression) for monthly data and determined a DW = 0.83 indicating a strong positive autocorrelation.

Even white noise can give that impression, and with strong enough autocorrelation one can get hellacious apparent «trends» that are nothing but noise.

For the same reason, tree growth and food production in one year may influence growth in the following year, and lead to a strong serial correlation or autocorrelation in the tree - ring record.

But if you look at the residuals and test for the presence of autocorrelation you'll get very strong evidence that the error term is autocorrelated.