MAT K167 Chapter Notes - Chapter 1: Nominal Level, Software Engineering, Big Data
Document Summary
Levels of measurement: ratio - natural zero starting point and ratios make sense. Interval - di erences are meaningful, but there is no natural zero starting point and ratios are meaningless: ordinal - data can be arranged in order, but di erences either can"t be found or are meaningless, nominal - categories only. Data cannot be arranged in order: nominal level of measurement - characterized by data that consist of names, labels or categories only. The data cannot be arranged din some order: ordinal level of measurement - can be arranged in some order, but di erences (subtraction) between data values either cannot be determined or are meaningless. Interval level of measurement - can be arranged in order, and di erences between data values can be found and are meaningful. For data at this level, di erences and ratios are both meaningful.
