Final answer:
The rank of a data point in a data set represents its order relative to the other data points.
Step-by-step explanation:
The rank of a data point in a data set represents its position or order relative to the other data points. To find the rank of each data point in the given data set: 4, 5, 5, 5, 7, 8, 12, 12, 15, 18, you can arrange the data in ascending order. The rankings will be assigned based on the order of the data points.
- Arrange the data points in ascending order: 4, 5, 5, 5, 7, 8, 12, 12, 15, 18
- Assign ranks to each data point based on their position in the ordered list:
- 4: Rank 1
- 5: Rank 2, 3, 4
- 7: Rank 5
- 8: Rank 6
- 12: Rank 7, 8
- 15: Rank 9
- 18: Rank 10
Therefore, the ranks for the given data set would be: 1, 2, 3, 3, 5, 6, 7, 7, 9, 10.