with a space dependent drift δ(X) and driven by the compensated jump martingale M t)=[xast (mu_{X}-nu_{X})]_{t}. Apart from mean reversion appearing via the implied drift δ(X), there may be mean reversion or momentum upwards or downwards depending on the dependence of G and M on X as well as the presence of leverage via the dependence of C on X.
So we may be seeing reversion to the mean as much as any actual movement.
Workers, particularly those with a college education, became more likely in the 2001 to 2003 period to be in a job that paid less than the job they lost, but this may be simply a reversion to the mean after the abnormally high wages paid to educated workers during the tech boom.
That super-simple, touch-anywhere approach to snapping photos on the go is a feature Motorola brass have been talking up for a while now, so it's quite surprising to see that the company may be mulling a reversion toward the mean.
Although the 4995 mutation results in a single amino acid change and thus may be susceptible to reversion, the mutant leucine codon selected for insertion into rDEN2Δ30-4995 would require two nucleotide changes to revert to a serine codon.
While word sequence and frequency analysis provide an inferred development pathway, it is important to note that not all mutational events may be observed, as reversion to reference sequence is possible in mutational hot-spots, and if a specific base change generates a mutational motif, the probability of additional mutations at that location will be increased.
Ms Jones added that S4C, as a publicly funded broadcaster with a grant of £85.7m in 2004 from the Department of Culture, Media and Sport, had no intention of taking a hard-nosed, commercial approach and was only in the market for buying Welsh-language rights for programming anyway - which may go on to be reversioned or re-voiced and sold abroad.
Similar evaluations may be made for mean reversion and momentum downwards.
Again, this pattern of results may be indicative of mean reversion.
We may be soaking in another reversion to idealistic conservatism, Hollywood-inspired political posturing and empty mass-culture referentiality, but it's hard not to notice how postmodern, how pliable and un-curious, our inner Jeffrey has become.
