(i) Survey random samples of 5 seniors, 5 juniors, 5 sophomores, and 5 freshmen, and get them to report the number of credits they are taking. Part-time students are included, so there are some extreme low outliers in the data.

(ii) Survey random samples of 5 seniors, 5 juniors, 5 sophomores, and 5 freshmen, and get them to report the number of credits they are taking. Only full-time students are being considered, and the distributions do not display any skewness or outliers.

Which of the above two designs should not be handled with ANOVA?