The box plot represents the number of tickets sold for a school dance. Tickets Sold for A Dance 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 Number of Tickets Sold Which of the following is the appropriate measure of variability for the data, and what is its value? The IQR is the best measure of variability, and it equals 13. O The IQR is the best measure of variability, and it equals 6. The range is the best measure of variability, and it equals 13. O The range is the best measure of variability, and it equals 6