Output 62.4.2 displays tests of model effects and the estimated regression coefficients and their covariance matrix. Alternatively, you can assume that the linear relationship between corn yield ...

Suppose that the sample of students described in the previous section was actually selected using stratified random sampling. In stratified sampling, the study population is divided into ...

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 work considers estimation of dichotomous characteristics of rare populations by sample survey. In particular, we investigate optimum allocation when a network sampling rule (also called ...

Management Science, Vol. 35, No. 11, Focussed Issue on Variance Reduction Methods in Simulation (Nov., 1989), pp. 1278-1296 (19 pages) Stratified sampling is perhaps the most natural of the variance ...