Sentence examples for changes in variance from inspiring English sources

Analyses are performed considering abrupt changes in variance occurring with and without shifts in the mean.

Specifically, we test whether changes in variance, parameters and mean are significant in the respective models.

This is because when extra variables are added, the variances are confounded, i.e. changes in variance of the residuals at one level induce changes in variance of residuals at another level (Kreft and de Leeuw 1998).

Although we expected to find consistent changes in variance, kurtosis, and skewness, the observed relationships were weak.

For crossover and parallel group designs, sample sizes are adjusted for reduced statistical power due to carryover effects and temporal changes in variance.

In all the abovementioned three scenarios, we find that the observed changes in variance and standard deviation increase with the increase in the distance.

The effect of changes in variances (Figs.  1 and 2) on the reliability of selection was quantified in detail in generations 20 and 21 by calculating the PEV reliability with different values of additive genetic variance (Table  4).

The effect of changes in variances on the PEV reliability and the reliability of selection was analyzed in detail in generations 20 and 21 and compared to the equilibrium reliabilities.

We follow Krolzig (1997) and do not consider a MS-AR model that only presents a change in variance.

If the short-term window is significantly longer than the target width, the change in variance caused by the target will be reduced.

Therefore, business cycle regimes of these countries are mainly dominated by a change in variance.17 The change in mean for Germany implies a significant decrease in the perceptions about the economic activity when there is a recession phase.