Statistics Terms. 8/24/12
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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| Stratified samples | the population is first divided into different categories (strata) and the number of members in each category is determined.
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| Biased samples | a sample with one or more subgroups that are either over represented or under represented
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| Cherry Picking | the practice of polling only those who you believe will support your cause
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| Non-response bias | a survey that is simply handed out gains few responses when compared to the number of surveys given out
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| Self selected sample | both sides appear to be responding, but the poll may disproportionately represent extreme viewpoints from both sides, while ignoring more moderate opinions that may be the majority view.
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| Face to face interview | fewer misunderstood questions, high response rate, additional information can be collected from respondents; time consuming, expensive, can be biased based on attitude/appearance of surveyor.
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| Self administered surveys | respondent can complete on their own time, less expensive than face to face interviews, anonymity cause more honest results; lower response rate
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| Random samples | everyone in the population has the same chance of being chosen.
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| Measure of central tendency | the mean, median, and mode of a set of data
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| Frequency distribution table | lists the data values, as well as the number of times each value appears in the data set; used for ungrouped data
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| Ungrouped data | data that is listed
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| Grouped data | data that is placed in intervals
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| Population | the whole group
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krissy005
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