David collects anxiety scores from 15 college students who visit the university health center during finals week. In SPSS, compute percentile ranks on the anxiety scores assuming that the distribution of scores is normal. What are the scores associated with the percentile ranks of 12, 27, 38, 73, and 88?

Compute percentile ranks on the anxiety scores, not assuming the distribution of scores is normal.

Based on the histogram and the descriptive statistics, which percentile rank method should you use?