[55 points]
A district manager rewards sales teams based on overall saies generated in a month. The data for eamings are shown in the table, where Low represents the lowest sales and High
represents the highest sales generated by a single sales team member.
Team Low High Range Mean Median IQR
Team X 275 2780 2505 1440.6 1432 837.7 716.8
Team Y 925 1850 925 1376.3 1371 443.3 259.8
Team Z 2250 3900 1650 3006.3 2943 542 505.9
心Part A: If the manager wants to award the sales team that has the most consistent earnings among its team members which team should it choose and why? Justify your answer
mathematically.
Part B if the manager wants to award the sales team with the highest average earning, which team should kt choose and why? Justify your answer.