Stats Vocab
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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| Population | The group of individuals that we hope to learn about
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| Sample | A part of the population that we examine in hope to learn about the population
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| Sample survey | Questions that are given to a sample in hope of learning something about the entire population. EX: Polls
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| 4 types of Bias | 1) Relying on Voluntary response 2)undercoverage of the population 3) nonresponse bias 4) response bias
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| Randomization | The best defense against bias. Each individual is given a fair, random chance of being select
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| Matching | Force a sample to resemble specific attribute
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| Sample size | # of individual in a sample.
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| Census | A sample that consist of the entire population
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| Population parameter | EX: the mean income of all employed people in the country
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| Statistic, sample statistic | values calculated for sampled data
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| Representative | a sample is representative if the statistics computed from it accurately reflect the corresponding population parameters
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| Simple random sample | each set of (n) elements in the population has an equal chance of being selected
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| Sampling frame | Lists of individuals from the sample
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| Stratified random sample | population is divided into several strata, and random samples are drawn from each stratum.
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| Cluster sample | entire groups or clusters are chosen at random
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| Systematic sample | selecting individuals systematically from a sampling frame
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| Multistage sample | sampling schemes that combine several sampling methods
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| Voluntary response bias | individuals can choose on their own whether to participate in the sample. Sample base on voluntary response is always invalid.
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| Convenience sample | individuals who are conveniently available. Not representative because every individual is not equally convenient to sample
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| Nonresponse bias | large fraction of those sampled fail to respond. Those who do response are likely not to represent the entire sample
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| Response bias | The people tell lies because you asked a sensitive question. EX: Do you do drugs?
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| Sampling variability | tendency of randomly drawn samples to differ, one from another.
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| interviewer bias | the person you having conducting the interview makes the person hesitant to answer the questions
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| Reporting Bias | the individual tends to round when answering
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You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
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