Aspects of Polling Techniques simple random sample each member of the population has an equal chance of being selected for the sample quota sample -a less accurate technique wherein polling organizations predetermine the characteristics of the needed sample, and then find respondents with those characteristics to fill the slots sampling error -the difference between a samples results and the result if the entire population had been interviewedAspects of Polling Techniques • simple random sample – each member of the population has an equal chance of being selected for the sample • quota sample – a less accurate technique wherein polling organizations predetermine the characteristics of the needed sample, and then find respondents with those characteristics to fill the slots • sampling error – the difference between a sample’s results and the result if the entire population had been interviewed