Question

select the reasons why the mean and median do not provide useful information about the center of a distribution of nominal data. nominal data can contain outliers, and, therefore, the mean is not a good measure of center. the median reflects the number that appears most often in a data set and therefore is not useful for nominal data. nominal data can only be continuous, and, therefore, the mean and the median cannot be calculated. the mean cannot be calculated because nominal values cannot be summed. for nominal data, the values cannot be placed in rank order, and, therefore, the median cannot be calculated.

Explanation:

Nominal data is categorical without order. Mean and median need numerical and ordered data, so they are not applicable as nominal values can't be ranked or summed.

Answer:

The mean cannot be calculated because nominal values cannot be summed. For nominal data, the values cannot be placed in rank order, and, therefore, the median cannot be calculated.