A set of data includes 98 data points ranging from 0 – 160. If the data is split into classes with a range of 10 (1 – 10, 11 – 20, etc), and there are no values that fall in the class 81 – 90, what can you say about the data? a. The median could be in the range 81 – 90. b. All the data lies below 80. c. The mean of the data will not be between 81 – 90. d. The relative frequency of the class 81 – 90 is 0.