The authors advocate the use of the generalized variance of the sample means-the determinant of the variance-covariance matrix $D(\overline{y})$ of the means-as a ...
Stratified sampling more effective than random sampling for detecting contaminants in infant formula
Producers of infant formula employ comprehensive food safety systems, including product testing to ensure those systems are working. A new study from the University of Illinois Urbana-Champaign finds ...
This is a preview. Log in through your library . Abstract Optimum allocation in stratified random sampling leads to a constrained optimization problem which is usually solved by any of the following ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback