| Continuous variable | A quantitative variable that can assume any value within a range
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| Descriptive statistics | Methods of organizing, summarizing, and presenting data in an informative way
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| Discrete variable | A quantitative variable that can only assume certain values
There is usually a "gap" between the values
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| Exhaustive | A property of a set of categories such that each individual, object, or measurement must appear in a category
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| Inferential statistics | The methods used to find out something about a population, based on a sample
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| Interval level | Includes the ranking characteristics of the ordinal scale and, in addition, the difference between values is a constant size
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| Mutually exclusive | A property of a set of categories such that an individual or object is included in only one category
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| Nominal level | A level of measurement in which the data are sorted into classes with no particular order to the classes
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| Ordinal level | A level of measurement that presumes that one category is ranked higher than another category
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| Population | The entire set of all individuals or objects of interest or the measurements obtained from all individuals or objects of interest
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| Qualitative variable | A variable that has the characteristic of being nonnumeric
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| Quantitative variable | A variable being studied that can be reported numerically
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| Ratio level | Has all the characteristics of the interval scale, but additionally there is a meaningful zero point and the ratio of two values is meaningful
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| Sample | A portion, or part, of the population of interest
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| Statistics | The science of collecting, organizing, presenting, analyzing, and interpreting data to assist in making more effective decisions
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