Final answer:
The level of measurement for a zipcode is Nominal because it is used as a categorical label without any inherent numerical value or order.
Step-by-step explanation:
The level of measurement for the variable zipcode is Nominal. When evaluating the levels of measurement, there are four main types: nominal, ordinal, interval, and ratio. In the case of zipcodes, they are classified as nominal data because zipcodes are essentially categorical labels used to identify geographic regions. They do not have a numerical value in terms of size, order, or distance between them that is meaningful. As such, zipcodes cannot be ordered meaningfully nor can you perform arithmetic operations with them. For example, the zipcode '90210' doesn't indicate that it is greater or lesser in any quantifiable quality than '10001', it just labels a different area.
Other examples of nominal data include the colors of crayons or categories such as yes/no responses. An example of ordinal data would be classifying high school soccer players by their athletic ability (e.g., superior, average, above average), as these categories have a clear order. Interval data includes things like baking temperatures, which can be ordered and have meaningful differences, but lack a true zero point. Finally, ratio data includes variables that have all the properties of interval data with the addition of a true zero point, allowing for calculation of ratios, such as weight or height.
Finally Nominal is the right answer