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Levels of Measurement. Alanna Pugliese Katherine Perdomo. Levels of measurement. There are 4 levels of measurement Nominal Ordinal Interval Ratio. Types of data. Categorical . Numerical. Have standard units of measurement Interval Ratio.
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Levels of Measurement Alanna Pugliese Katherine Perdomo
Levels of measurement • There are 4 levels of measurement • Nominal • Ordinal • Interval • Ratio
Types of data Categorical Numerical Have standard units of measurement Interval Ratio • Units are categories with no numerical meaning • Nominal • Ordinal
Nominal data • Nominal data: • Categorizes people or things • Categories cannot be ordered • Frequency measures are used to describe/summarize the data
Ordinal Data • Ordinal data: • Categorizes persons and things • Implies rank order of intensity but not a numeric quantity • No standard unit of measure
iNTERVAL scales • Interval data : • Numerical • Distance between the numbers are equal but there is no zero • Standard unit of measure
Ratio scales • Ratio data: • Numerical • There is equal distance between the numbers and there is a zero point • Standard unit of measure