Secular variation wiki

The secular variation of a time series is its long-term non-periodic variation (see Decomposition of time series). Whether something is perceived as a secular variation or not depends on the available timescale: a secular variation over a time scale of centuries may be part of a periodic variation over a time scale of millions of years. Natural quantities often have both periodic and secular variations. Secular variation is sometimes called secular trend or secular drift when the emphasis is on a linear long-term trend.

Contents

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1 Examples1.1 Astronomy1.2 Market trends1.3 Geomagnetic secular variation2 Notes3 References

Examples[edit]

The term secular variation is used wherever time series are applicable in economicsoperations researchbiological anthropologyastronomy (particularlycelestial mechanics)

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