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1 vote
1 answer
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rolling mean series - strong autocorrelation

I need to works with time-series of rolling means of a certain variable that comes from the data. I have this rolling means for N different individuals. Call them Y. I would like to test some ...
user9875321__'s user avatar
2 votes
2 answers
658 views

Rolling autocorrelation vs whole series autocorrelation

Suppose we have some financial time series. When we calculate the standard ACF, $\mu$ is considered as the average of all series' values. However, if we have a volatile series, the average can be ...
Nik's user avatar
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9 votes
1 answer
2k views

What is the autocorrelation function of a time series arising from computing a moving standard deviation?

Say I have a time series of observations and I compute a measure of the variance of that time series as the standard deviation (SD) in a rolling window of width $w$ and that window is moved in single ...
Gavin Simpson's user avatar