vocab words
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| randomization | the best defense against bias, in which each person is given a fair random chance of chance of selection
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| representative | the situation in which the statistics calculated from a sample accurately reflect the corresponding population parameters
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| voluntary response bias | bias introduced to a sample when individuals can choose whether or not to respond
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| simple random sample | a sample in which each set of elements in the population has an equal chance of selection
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| statistic, sample statistic | values calculated for sample data
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| stratified random sample | a sampling design in which the population divided into several subpopulations and random samples are then drawn from each subpopulation
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| bias | any systematic failure of a sampling method to represent its population
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| undercoverage | a form of bias introduced when one part of the population has less representation in the sample than in the original populations
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| multistage sample | sampling schemes that combine several sampling methods
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| population | the entire group of individuals in a sample
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| convenience sample | a sample consisting of individuals who are easily accessible
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| response bias | anything in a survey that influences responses
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| matching | any attempt to force a sample to resemble specified attributes of a population
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| sampling frame | a list of individuals from whom the sample is drawn
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| sample | a subset of a population, examined in hope of learning about the population
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| systematic sample | a sample dram by selecting individuals systematically from the sampling frame
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| population parameter | a numerically valued attribute of a model for a population
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| sample survey | a study that asks questions of a sample drawn from some population in the hope of learning something about the entire population
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| sampling variability | the natural tendency of randomly drawn samples to differ, one from another
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| nonresponse bias | bias introduced to a sample when a large fraction of those sampled do not respond
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| cluster sample | a sampling design in which entire groups are chosen at random
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| census | a sample that consists of the entire population
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| sample size | the number of individuals in a sample
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