levels of measurement

• nominal 


  • Frequency count data that consists of the number of participants falling into categories. (e.g. 7 people passed their driving test first time, 6 didn’t).
• ordinal 


  • Data that is capable of being put into rank order (e.g. places in a beauty contest, or ratings for attractiveness).
• interval


  • Data measured in fixed units with equal distance between points on the scale