A statistically efficient sampling procedure is one that produces fewer sampling errors for the same sample size than the other procedures. Stochastic Process is one where there is an element of random variation. Story Completion is a projective technique where participants are asked to provide the conclusion to a number of incomplete stories provided by the researcher. Stratum Chart is a set of line charts where the data are successively aggregated over the series. The magnitudes of each variable are represented by the areas between the line charts.
Strike Rate see incidence.
Structured Observation is a form of observation study where the behaviour of interest and the method of observation are clearly specified in advance of the study. Stub is a row heading in banner format tabulations. It is usual practice to have the dependent variables as stubs. Sub Sample is a sample of a sample, which may or may not be selected using the same approach as the original sample. Sugging is sales under the guise of research and it is one of the reasons why potential participants in market research projects are reluctant to take part.