Identify Strata: Determine the characteristics that will define the strata. Common criteria include age groups, gender, socioeconomic status, or geographic location. Divide the Population: Separate the overall population into these distinct strata. Random Sampling Within Strata: Conduct a random sampling within each stratum. The sample size from each stratum can be proportional to its size in the population (proportional allocation) or equal across strata (equal allocation).
