data, consist from information coming from observations, counts, measurements, or responses, statistic, science of collecting, organizing, analyzing, and interpreting data, population, collection of all outcomes, responses, measurements, or counts, sample, subset, or part, of a population, parameter, numerical description of a population characteristic, sample statistic, numerical description of a sample characteristic, descriptive statistic, branch of statistics that involves the organization, summarization, and display of data, inferential statistic, branch of statistics that involves using a sample to draw conclusions about a population, qualitative, consist of attributes, labels, and nonnumerical entries, quantitative, consist of numerical measurements or counts, nominal, qualitative only; labels or qualities, ordinal, qualitative; can be arranged in order or ranked, interval, quantitative; can be ordered, zero entry represents a position on a scale, ratio data, similar to interval; zero entry is an inherent zero and has value, observational study, researcher does not influence the responses, experimental study, researcher deliberately applies a treatment before observing the responses, simulation, use of mathematical or physical model to reproduce the conditions of a situation or process, survey, an investigation of one or more characteristics of a population, confounding variable, occurs when an experimenter cannot tell the difference between the effects of different factors on the variable, blinding, technique where the subjects do not know whether they are receiving a treatment of a placebo, double-blind, neither the experimenter nor the subjects know if the subjects are receiving a treatment or a placebo, randomization, process of randomly assigning subjects to different treatment groups, replication, the repetition of an experiment under the same or similar conditions, census, count or measure of an entire population, sampling, count or measure of part of a population

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