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| the entire group of individuals or cases about whom we want to learn |
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| a smaller subset of a population from wc we calculate statistics |
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way of gathering data by polling or taking surveys from a sample of population
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| any systematic way in wc sample fails to represent the overall population |
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| to avoid bias. each individual of the pop. must have an equally likely chance of being chosen |
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| the tendency to make our sample look the way we think it should, rather than randomized |
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| the number of indiv. that are in the sample taken from a pop. |
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| a sample that is move of every single individual of the population |
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| a variable represent numerical values about a pop. such as GREEK LETTERS. |
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| a var. using regular english alphabet to represent numerica valies about a sample |
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| a sample whose statistics closely reflect the true pop parameters |
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| where every possible sample of N individuals is equally likely |
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| the list of individuals fro wc the sample is taken |
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| the random differences that exist between different possible random samples |
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| sampling taken from different subgroups that are each homogenous to get a sample including all kinds |
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| a sample taken of one HETEROGENOUS subgroup. that s representative of the pop |
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| a sample found using two or more strategies to get a truly representative sample |
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| a sample taken using some systematic approach to choose individuals. |
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| voluntary response varialble |
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| when some individuals choose to volunteer their response to a study |
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| made up of individuals who are most convenient to sample |
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| sampling done in such a way that key groups of the population are missed and te sample becomes unrepresentable |
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| bias introduced when a large fraction og those chosen to respond; do not respond |
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| when a large fraction of pop response honestly ..EMOTIONS |
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