Swollen tonsils that are not painful or do not cause other problems do not need to be treated. Your provider may not give you antibiotics. You may be asked to come back for a checkup later. If tests show you do have strep, your doctor will give you antibiotics.
Stratified Random Sampling. Stratified random sampling is a probabilistic sampling option. The first step in stratified random sampling is to split the population into strata, i.e. sections or segments. The strata are chosen to divide a population into important categories relevant to the research interest.
What it is. In a proportionate stratified sample, the population of sampling units are divided into sub-groups, or strata, and the sample is selected separately in each stratum. For the sampling to be proportionate, the sampling fraction (or interval) must be identical in each stratum.1.2.isproportionate sampling 1.8 What it is. In a disproportionate stratified sample, the population of sampling units are divided into sub-groups, or strata, and a sample selected separately per stratum. Crucially, the sampling fraction is not the same within all strata: some strata are over-sampled relative to others.