Percentile function into statistics module #144585
Description
Feature or enhancement
Proposal:
import math
def nth_percentile(data: list, n: int):
"""
Calculate the nth percentile of a dataset.
:param data: List of numerical values
:param n: Percentile (0–100)
:return: The nth percentile value
"""
if not data:
raise ValueError("Data list cannot be empty")
if not 0 <= n <= 100:
raise ValueError("Percentile must be between 0 and 100")
sorted_data = sorted(data)
k = (n / 100) * (len(sorted_data) - 1)
lower = math.floor(k)
upper = math.ceil(k)
if lower == upper:
return sorted_data[int(k)]
return sorted_data[lower] + (k - lower) * (sorted_data[upper] - sorted_data[lower])Has this already been discussed elsewhere?
This is a minor feature, which does not need previous discussion elsewhere
Links to previous discussion of this feature:
No response