Listed below are the lengths of time (in years) it took for a random sample of college students to earn bachelor’s degrees (based on data from the National Center for Education Statistics). Based on these results, does it appear that it is common to earn a bachelor’s degree in 4 years?
4 4 4 4 4 4 4.5 4.5 4.5 4.5
4.5 4.5 6 6 8 9 9 13 13 15
Find the (a) mean, (b) median, (c) mode, and (d) midrange for the given sample data. Express answers with the appropriate units of measurement.