This paper provides an illustration of an application to the field of education of a technique hitherto used mainly in industry. The effect of systematic stratified sampling is briefly discussed.

This paper presents the results of a limited investigation which brings into focus the difficulties encountered in developing exact distribution-free methods for stratified simple random sampling. It ...

In their simulated system, image data is first simplified using a process called principal component analysis (PCA), which reduces the amount of information while preserving key features. A complex ...