Statistics, Data, Population, Complete Set, Population Numbers, Numbers describing the population, Sample, Smaller more specific set (subset), Sample Statistics, numbers describing the sample, Simple Random Sampling, randomly selected subset, Systemic Sampling, selection of every nth subject in the population, Convenience Sampling, sample being drawn from population that is close at hand, Cluster Sampling, entire population is divided into separate groups, Stratified Sampling, divide subjects into subgroups based on characteristics they share, Bias, Something that alters a statistical studies results, Observational Study, researcher observes and measures only, Experiment, researchers apply treatment and observe, Treatment Group, group that gets treatment in an experiment, Control Group, group that doesn't get the treatment in an experiment, Placebo, lacks active ingredients, Placebo Effect, a person improves because they believe they are receiving treatment, Single-anonymous, participants don't know if they are receiving treatment, Double-anonymous, participants & researchers don't know who is receiving treatment, Retrospective Study, study based on data from the past.

Statistics

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