Term
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Definition
-nominal
-ordinal
-interval
-ratio |
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Term
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Definition
-simple/lowest level of measurement
-categories that are not more of less diff from one another in some way
-mutually exclusive and exhaustive categories
-Ex: night vs. day, new vs. used, yes vs. no |
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Term
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Definition
-order/ranking imposed on categories
-nominal measurements that CAN be placed in order
-no real numerical value but can show an increase when they are lined up
-values are not necessarily equally spaced from one another
-ex: 1=tallest, 2=next tallest 3= third tallest |
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Term
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Definition
-numerical distances between intervals
-based on a number scale that uses real numbers
-intervals between the numbers are equal
-absence of a zero point
-Ex: temperature, likert scale scores |
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Term
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Definition
-highest level of measurement
-uses real number system
-all intervals are equal
-contains a zero
-zero means that none of the variable exists
-NEEDS equal intervals between values and zero MUST mean that none of the quantity being measured is present
-if one of these factors is absent the data is either interval or ordinal |
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Term
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Definition
-how consistently the measurement technique measures the concept of interest
-same results on repeated measures |
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Term
| how is reliability measured? |
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Definition
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Term
| what value is considered highly reliable? |
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Definition
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Term
| which is established first: reliability or validity? |
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Definition
| reliability established BEFORE validity |
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