Sentence examples for decline in variance from inspiring English sources

The highest decline in variance over the next 5 years occurred in the expected number of years lived adjusted only for dispersion (e C ).

For example, Galton's "regression to the mean" is defined as a decline in variance over generations (p. 102), which is misleading for modern readers.

Therefore, this suggests a decline in variance in age-at-death or the process of compression of mortality over the time period (36, 46, 49).

Importantly, we did not find evidence for the decline in overall selective pressures across the demographic transition that could be expected from observing the decline in variance in relative total fitness with time.

The decline in variance in relative fitness was mostly explained by the decrease in variance in relative child survival (up to 1974, 5.20 × 10−2; 1975 onward, 8.15 × 10−3; ρ = −0.84; p < 0.001; Figure 1B), itself the result of the decrease in mean child mortality.

Although reductions in prereproductive mortality drove the decline in variance in relative total fitness, we observed an increase in the variance of relative fertility (up to 1974, 5.57; 1975 onward, 6.32; ρ = +0.49; p < 0.001; Figure 1C), a pattern that also marks the first stages of other demographic transitions [ 2, 10, 13].

However, the declines in variances become much slower thereafter, reflecting the slow decay of linkage disequilibrium and the gradual increase in the number of new segregating variants following a population expansion.

In flour beetles, continuous selection over 130 generations on pupa weight, starting from a heterogeneous background, has also resulted in constant increase of phenotypic value with a small decline in genetic variance.

Areas which experienced diminished vegetative cover over time, are related to specific vegetation types, and declines in the variance of precipitation (even in the presence of overall increases in annual mean).

Our evidence suggests that the ex ante risk premium on the global market portfolio has dropped considerably - we show that this fall in the risk premium is related to a decline in the conditional variance of global real cash flow growth rates.

The prey in the predator-prey model experiences a gradual decline in additive genetic variance as a consequence of the moving optimum, and the decline is slightly more rapid in experimental runs than it is in control runs, but otherwise the control runs look very similar to the experimental runs with respect to the dynamics of the additive genetic variance.