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Stats:CH12 vocab

vocab words

randomization the best defense against bias, in which each person is given a fair random chance of chance of selection
representative the situation in which the statistics calculated from a sample accurately reflect the corresponding population parameters
voluntary response bias bias introduced to a sample when individuals can choose whether or not to respond
simple random sample a sample in which each set of elements in the population has an equal chance of selection
statistic, sample statistic values calculated for sample data
stratified random sample a sampling design in which the population divided into several subpopulations and random samples are then drawn from each subpopulation
bias any systematic failure of a sampling method to represent its population
undercoverage a form of bias introduced when one part of the population has less representation in the sample than in the original populations
multistage sample sampling schemes that combine several sampling methods
population the entire group of individuals in a sample
convenience sample a sample consisting of individuals who are easily accessible
response bias anything in a survey that influences responses
matching any attempt to force a sample to resemble specified attributes of a population
sampling frame a list of individuals from whom the sample is drawn
sample a subset of a population, examined in hope of learning about the population
systematic sample a sample dram by selecting individuals systematically from the sampling frame
population parameter a numerically valued attribute of a model for a population
sample survey a study that asks questions of a sample drawn from some population in the hope of learning something about the entire population
sampling variability the natural tendency of randomly drawn samples to differ, one from another
nonresponse bias bias introduced to a sample when a large fraction of those sampled do not respond
cluster sample a sampling design in which entire groups are chosen at random
census a sample that consists of the entire population
sample size the number of individuals in a sample
Created by: britlee14