Kevin S. answered 09/06/23
Experienced Statistics Tutor and Researcher with 25+ Years Experience
Percentile rank of a value = ((Rank of the value - 1) / (n - 1)) x 100
For the sorted dataset 455, 459, 480, 499, 651, 652, with a total count of 6 items:
- For the value 455 (rank 1):
- Percentile Rank = ((1 - 1) / (6 - 1)) x 100 = 0%
- For the value 459 (rank 2):
- Percentile Rank = ((2 - 1) / (6 - 1)) x 100 = 20%
- For the value 480 (rank 3):
- Percentile Rank = ((3 - 1) / (6 - 1)) x 100 = 40%
- For the value 499 (rank 4):
- Percentile Rank = ((4 - 1) / (6 - 1)) x 100 = 60%
- For the value 651 (rank 5):
- Percentile Rank = ((5 - 1) / (6 - 1)) x 100 = 80%
- For the value 652 (rank 6):
- Percentile Rank = ((6 - 1) / (6 - 1)) x 100 = 100%
These are the percentile ranks rounded to the nearest whole number.