Summarize the variability of this data set by calculating its range 8 15 13 10 38 19 35 74 10 18 21 19 and 33 what would be the answer? is the answer 34?

Yes, the answer would be 34. The range of the data set is the difference between the highest value (74) and the lowest value (8), which is 74 - 8 = 66.