Rank Sum ?After ranking the combined list of 24 arrival delay times, find the sum of the ranks for Flight 19.

Solution 2BSC Step 1 : We have 24 observations from Flight 19 and 21. Based on the values we give ranks, if it is least value then rank will be 1 and next to the value will be 2 and so on. If there is a tie then mean of the values is the rank, for example the rank of 5 is 2.5. Highest value is 106 which is assigned the rank 24. Ranks for the flight 19 are 2.5 , 18.5 , 7 , 4, 10.5 , 22 , 17 , 13.5 , 9 , 12 , 18.5 , 5. The sum of the ranks for flight 19 = 139.5