CCJS 300 Chapter Notes - Chapter 10: Face Validity, Final Analysis, Random Assignment

• School: University of Maryland
• Department: Criminology and Criminal Justice
• Course: CCJS 300
• Professor: Alan Lehman

Document Summary

Chapter 10: scaling and index construction: variables may be measured on 4 levels. Nominal level variables places responses in mutually exclusive categories and has no mathematical meaning. >>any numbers assigned are merely qualitative descriptions that enable us to keep track of nominal variables. Ordinal level variables placement of objects into ranks. >>rank respondents, but should not be mistaken for real numbers. Internal level variables measurement in which equal distance between objects on a scale is assumed. >>ex: the distance between 2 and 4 is the same distance between 8 and 10. Ratio level variables refers to interval level measurement that also has a fixed, meaningful 0 point. >>enable one to show how many times greater one value is than another: scaling attempts to increase the complexity of the level of measurement of variables from nominal to at least ordinal and hopefully interval/ratio. Primarily useful for avoiding reliance on any single response alone as an.