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21 Cards in this Set
- Front
- Back
- 3rd side (hint)
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parameter
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numerical measurement describing some characteristic of a population
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population
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statistic
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numerical measurement describing done characteristic of a sample
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sample
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population
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compete collection of all measurements/data being considered
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parameter
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census
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collection of data from every member of the population
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sample
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subcolllection of members selected from a population
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quantitative data
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numbers representing counts or measurements
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numerical
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categorical data
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name's or labels that are not numbers representing counts or measurements
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qualitative or attribute
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discrete data
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when data values are quantitative and the number of values is finite/countable
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finite or countable, fewer
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continuous (numerical) data
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infinitely many possible values, where the collection of values is not countable
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infinite, not countable, less
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nominal measurement
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data consisting of names, labels, or categories only. can't be arranged in ordering scheme
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SSN, political party, yes/no/undecided
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ordinal
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can be ordered, but differences (by subtraction) meaningless
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interval measurement
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can be ordered, differences found and meaningful, no natural zero
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ratio measurement
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arranged in order, differences found and meaningful, and IS natural zero
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frequency distribution (table)
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lower class limits
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smallest number in different classes
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upper class limits
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largest number in classes
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class boundaries
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split the difference between the end of one class and beginning of the next
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(upper class limit + next lower class limit)/2
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class width
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difference between two consecutive lower class limits
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relative (percentage) frequency distribution
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cumulative frequency distribution
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histogram
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graph of bars of equal width drawn adjacent to each other (unless gaps in data). Horizontal scale=classes; vertical scale=frequencies
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