PIQUA, Ohio (WDTN) — The City of Piqua has provided an update regarding soil sampling at a former battery testing plant. According to a Piqua news flash, a work plan for soil sampling from the ESRG ...
The problem of estimating the variance of the ratio estimator in sampling with probability proportional to aggregate size is investigated. The form of nonnegative unbiased variance estimators is found ...
Results that may be inaccessible to you are currently showing.
Hide inaccessible results
Feedback