Sentence examples for first phase of sampling from inspiring English sources

In this paper we consider variance estimation for population totals and ratios in complex, cross-stratified surveys in which the ultimate sampling weights are random variables, dependent on the first phase of sampling.

To reduce the sampling effort, the initial selection of points is viewed as the first phase of sampling and a subsample of these points is selected in a second phase by means of one-per-stratum stratified sampling (OPSS).

In collaboration with local staff and veterinary authorities, the first phase of sampling was conducted during May July 2011.

The number of pooled hereditary cancer samples was increased from 10 to 12 per lane (the maximum number of available indexes) following preliminary coverage analysis of the first phase of samples.

Only those clusters selected during the second phase of sampling were measured in the field.

Only the clusters selected during the second phase of sampling were measured in the field.

†15 springbok and 4 wildebeest were recaptured during the second phase of sampling (December 2011).

During the second phase of sampling, C. difficile was not cultured from air samples or isolated from environmental sites in both the study and control bays.

First, 44 locations spaced on a regular square grid were chosen by a systematic random sampling (first phase of the sampling).

The results of the first phase of air sampling are presented in Figures 2 and 3. From these it can be seen that on both days C. difficile was cultured from the air of the elderly care bay, with counts of 53 – 426 cfu/m3 of air, indicating that substantial numbers of C. difficile-spores were liberated into the ward air throughout this period.

This applied even when sampling with probability proportional to size was used in the second-phase of sampling rather than simple random sampling.