Systematic Random Sampling The method of systematic random sampling (METHOD=SYS) selects units at a fixed interval throughout the sampling frame or stratum after a random start. PROC SURVEYSELECT ...

In equal probability sampling, each unit in the sampling frame, or in a stratum, has the same probability of being selected for the sample. PROC SURVEYSELECT provides the following methods that select ...

, but systematic sampling can be used if there is a trend or pattern across the habitat, such as distance up a beach, or altitude on a hillside. If you are using the wrong kind of sampling method ...

When you have chosen a sampling area, first divide it up into a grid, for instance, having 10 × 10 divisions. Use a suitable method – you could draw numbers out of a hat – to generate a pair ...

Within a survey of mountain forest types in the Swiss Alps, we compared three statistical sampling methods, i.e. stratified random sampling of the investigation area, systematic sampling and ...