[mgurlitz]

You're right, they shouldn't be making that average. Specifically, Likert data is ordinal, meaning 14 is less than 15 and greater than 13, but the gap between 15 and 14 may be different than 14 and 13.

For example, let's say people measure neuroticism exponentially, and an increase of one point means 10x perceived neuroticism. Because mean(log(x)) != log(mean(x)), the average won't be representative.

Everything else looks OK though: count, median, percentiles, a histogram.