As ZIP code are given as data, it is of nominal level of measurement. So categorical frequency distribution can be used here. Each ZIP code is representing a category.
Sorted order of ZIP code:
15130
15130
15130
15130
15130
15131
15131
15131
15132
15132
15132
15133
15133
15133
15133
15133
15133
15133
15133
15134
Frequency distribution:
Comments
Leave a comment