Differentiate among data collection techniques (nominal, ordinal, interval, and ratio data). Describe the advantages and disadvantages of each.© BrainMass Inc. brainmass.com June 3, 2020, 11:59 pm ad1c9bdddf
Nominal data is the most basic. As I tell my students, the variables just are: male,female, Black, Caucasian, Egyptian, Hawaiian, tall, short. They cannot be tested in terms of order. Ordinals are those data that can be placed in order. Amount of pay, level of education, winners of a race, military personnel. Anything that can be ranked is ordinal.
Ratio and interval are tricky but ...
Short discussion on the levels of measurements and their uses in quantitative studies.