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AMDM Unit 3 Vocab

Observational Study Research in which data is collected, by observation or survey, about some characteristic of the population.
Experimental Study Research in which the researcher separates participants into two or more groups, applies some sort of treatment, then compares the results.
Treatment Something that researchers administer to participants in an experimental study
Variable of Interest Measured result in an experimental study
Control Group A group in an experimental study that does not receive a treatment
Placebo Effect A phenomenon in which a person, who is receiving an inactive drug or treatment, experiences similar or the same effects as someone receiving the active drug or treatment.
Hypothesis An assumption or guess
Population The entire collection of items or subjects that are the focus of concern in a study.
Research Question A question that states what a researcher will attempt to answer and that guides research design
Primary Data Data that you collect directly. Examples are experiments, surveys, or observations
Secondary Data Data that have been collected by someone else and are available to the researcher. Examples are the internet, printed materials, or historical documents.
Pilot Study A small-scale version of a research plan.
Institutional Review Board A group that must approve all study design plans
FDA A group that performs inspections of IRB’s to ensure that they are working effectively.
Margin of Error Represents a range in a study.
Pollsters A group that collects data regarding elections.
Simple Random Sampling The researcher chooses the sample from the entire population through a randomization method.
Stratified Random Sampling The researcher separates the population into a number of strata and then takes a random sample within each strata.
Systematic Sampling The researcher separates the population into evenly sized groups, randomly selects one participant in the first group and then selects the nth participant from each other group.
Cluster Sampling The researcher separates the population into groups and then randomly selects some of these groups to participate.
Convenience Sampling The researcher selects participants based on easy accessibility.
Created by: Deigh