5. (6 pts) A team of researchers observed the behavior of 20 children during break time on a school playground. The observers recorded how many times each child performed a "violent act" - be it a push, a kick, or a punch - against another child. The scores of the 20 children were as follows:

20 1 00 4 01 2 13 3 01 4 80 0 2 0

1. What is the level of measurement for 'violent act'?
2. What measures of center are appropriate for your level of measurement?
3. Calculate (you may use SPSS, Excel) and interpret the appropriate measures of center for 'violent act'