Tag: cluster sampling

Survey Sampling – How Does It Work?

Survey Sampling – Introduction When it’s not feasible to study an entire target population, a simple random sample is the next best option; with sufficient sample size, it satisfies the assumption of independent and identically distributed variables. And perhaps even more important, it will tend to be nicely representative for the population with regard to […]

Sampling in SPSS

Sampling is at the very core of statistical tests: drawing conclusions on research populations based on (small) samples from those populations. Basically all statistical tests quietly assume that the data you’re analyzing are a simple random sample from your population. This assumption being ignored is the very reason why political polls are often widely off and research findings can’t be […]