Sentence examples for variance shift from inspiring English sources

This type of chart is employed to monitor the variation in the variance shift.

This type of chart is employed to monitor the variation in variance shift.

For different variance shift magnitudes, we repeat this procedure 10,000 times.

The employ of three aforementioned statistics is motivated by controlling mean shift, variance shift and their ratio (CV) if both mean and SD are not stable.

We can see that under both estimators, increasing the magnitude of variance shift in the quality characteristic x 2 leads to better estimates.

It is obvious that as the variance shift in the quality characteristic x 1 increases, the preciseness and accuracy of both estimators increase.

This chart is able to detect two-sided mean shifts and increasing variance shifts by inspecting the absolute value of sample mean shift.

(2) Some recent studies on identification of mean shifts or/and variance shifts of a multivariate process are based on innovative techniques.

Even though the design algorithm is discussed in detail only for the ¯¯¯X&S chart, the general idea can be extended to many other charts such as the joint CUSUM charts and joint EWMA charts for detecting mean and variance shifts.

Moreover, we present the MLE approach for estimating the time of variance shifts.

In the first module, we aim to detect the variance shifts and diagnose quality characteristics responsible for out-of-control signals.