Final answer:
The level of measurement for the variable 'nation of origin' is nominal, as it represents different categories that cannot be ordered or used in calculations. The correct option is D.
Step-by-step explanation:
The student's question is asking to determine the level of measurement for the variable 'nation of origin.' According to the levels of measurement in statistical analysis, data can be classified into four levels: nominal, ordinal, interval, and ratio.
With the 'nation of origin,' we are dealing with categories that do not have a numeric value and cannot be logically ordered or ranked in a meaningful way. The nations cannot be said to be more or less than each other in the context of origin data; they are simply different categories. Therefore, the correct level of measurement is nominal.
Nominal data is qualitative and represents different categories or groups which are not ordered. Examples of nominal data would include colors, names, labels, and, in this case, nations of origin. This is the lowest level of measurement and is primarily used for classification.