how to choose units in a survey of demographics how to determine if a sample size is representative a geographically representative sample has how many units what is representative sample what is meant by representative of a unit type how to determine unit size of sampling when selecting units how do you select each representative units how to determine if a population sample is representative? what is multi-stage sampling how do you decide which is more representative unit or geographical area is a population representative of a particular unit how are units selected for population how do you determine a representative sample of the population why are units representative for sample size? what is a representative sample how to describe a unit for the population what is a representative sample size what is the sample sample size how do you find the representative population what makes a sample representative