Frequency Percent Valid Percent Cumulative Percent Valid 18 19 2.2 2.2 2.2 19 47 5.5 5.5 7.8 20 50 5.9 5.9 13.6 21 52 6.1 6.1 19.8 22 72 8.5 8.5 28.2 23 63 7.4 7.4 35.6 24 61 7.2 7.2 42 8 25 74 8.7 8.7 51.5 26 83 9.8 9.8 61.3 27 86 10.1 10.1 71.4 28 80 9.4 9.4 80.8 29 79 9.3 9.3 90.1 30 84 9.9 9.9 100.0 Total 850 100.0 100.01. Is it nominal, ordinal, or interval/ratio? 2. What is the value of the mode? 3. If you can use the median, indicate its value (otherwise use NA [not applicable] for your answer)