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Levels of Measurement. IB Psychology- IA. Nominal. Data are in categories Example: yes/no responses. Ordinal. Data can be put in order from smallest to largest There might not be an equal distance between scores Example: Likert scale. Interval. Data can be put in order

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levels of measurement

Levels of Measurement

IB Psychology- IA

nominal
Nominal
  • Data are in categories
  • Example: yes/no responses
ordinal
Ordinal
  • Data can be put in order from smallest to largest
  • There might not be an equal distance between scores
  • Example: Likert scale
interval
Interval
  • Data can be put in order
  • There is an equal distance between the scores
  • There is no true zero point- numbers can be negative
  • Example: Temperature
ratio
Ratio
  • Data can be put in order
  • There is an equal distance between the scores
  • There is a true zero point- the scale can’t be negative
  • Example: weight, time