PO217 Lecture Notes - Lecture 5: Measuring Instrument, Content Analysis, Theoretical Definition
Document Summary
The level of measurement that can be achieved depends on: The nature of the property being measured. The general rule is to aim for the highest possible level of measurement because higher levels of measurement enable us to perform more powerful and more varied tests. Involves classifying a variable into two or more categories and then sorting our observations into the appropriate category. Numerals simply serve to label the categories. No hierarchy among categories and the categories cannot be related to one another numerically. Rule: do not assign the same numeral to different categories or different numerals to the same category. The categories must be exhausting and mutually exclusive. Involves classifying a variable into a set of ordered categories and then sorting our observations into the appropriate category according to whether they have more or less of the property being measured.
