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8 Cards in this Set
- Front
- Back
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Discrete variables
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a variable that can only take on certain values
o Exact numbers |
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Continuous variables
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a variable that can take on any value (within the limits that its values may range)
o Weight, age and temp Even though a variable is continuous in theory, the process of measurement always reduces it to a discrete one |
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Nominal scale
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o Qualitative variables that are basically categories
Have to be mutually exclusive (the observations cannot fall into more than one category) and exhaustive (there must be enough categories for all the observations) • Eye color |
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Ordinal scale
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o Like nominal but like a set of ranks
Ranked in order of magnitude, but NO IMPLIED DIFFERENCE |
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Interval scale
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Like an ordinal scale but the given distance between measures has the same meaning anywhere on the scale
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Ratio scale
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Has all the properties of an interval scale plus an absolute zero point
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Kelvin
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Is a ratio scale because it uses the same unit for its intervals..and has an absolute zero
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Order of stats
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Research question--statistical question--collection of data--statistical conclusion--research conclusion
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