If you specify the option METHOD=SEQ and do not include a SIZE statement, PROC SURVEYSELECT uses the equal probability version of Chromy's method for sequential random sampling. This method selects ...

Refineries need to conform to the newly updated US federal regulation CFR 40. To facilitate this process, US EPA Method 325 has been developed that stipulates tracking of volatile organic compounds ...

If you specify the option METHOD=PPS_SEQ, PROC SURVEYSELECT uses Chromy's method of sequential random sampling. Refer to Chromy (1979) and Williams and Chromy (1980). Chromy's method selects units ...

THE object of sequential sampling is to reduce the size of the sample which must be drawn to reach a decision about a population within specified limits of error. The ...