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a variable that describes characteristicd or qualities, cannot be measured in numerial terms.
qualitative
value determined by counting
quantitative discrete
value is determined by measuring
quantitative continuous
nominal level
lowest level of measurement characterized by data that consists of names, labels, or categories ex. gender, favorite color
ordinal level
data is ranked or arranged in particular order. ex. ranks of policemen and class standing (freshies, sophies)
interval level
just like ordinal level but between two ranks of data have meaning. 0 is not absolute ex. temperature
ratio level
the highest level of measurement. has all characteristics of all the levels and has true 0. ex. age, height, time