The data set gives the number of hours it took each of the 10 students in a cooking class to master a particular technique. {5, 3, 5, 30, 4, 5, 4, 3, 4, 5}

The best measure of center for this data set is? and its value is?

I would say it is either median or mode. Both are basically unaffected by outliers. For median, order them smallest to largest. 3,3,4,4,4,5,5,5,5,30. The median is the middle number, or 4.5 because there is an even amount of numbers, and 4.5 is between 4 and 5. The mode is 5 because it occurs the most. I would use the median, but it is completely up to you.

median and 4.5