A Walgreens manager compared the numbers of hours different pharmaceutical technicians worked over one week. The table shows the number of hours worked per technician.
Hours per server: 20, 21, 14, 21, 21, 12, 18, 23, 20, 23, 12
Construct a dot plot to represent the data, and determine which of the following is correct.
A.Q1 is 13
B.Q3 is 21.5
C.The interquartile range is 9
D. The data has no outliers