Dr. Michael R. Hyman, NMSU Levels of Measurement (Click icon for audio)

2 Types of Measurement Scales Nominal/categorical Ordinal/rank order Interval Ratio

3 Nominal/Categorical Data Zip code of residence Employment status Marital status Gender Race Religion Ethnicity

4 Ordinal Data

5 Interval Data

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7 Ratio Data Market share Sales (units and dollars) Income Number of salespersons per territory Number of full-time employed members of household Number of children in household

8 Properties of Measurement Scales

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11 Properties of Measurement Scales

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13 Take measurements at highest level Measure can’t exceed basic nature of attribute e.g., taste

14 Permissible Statistics

15 Descriptive Statistics for Different Scale Types

16 Recap Levels of measurement –Nominal, ordinal, interval, and ratio Properties of scales –Order, distance, and origin Permissible statistics