Reference library

Lists & loops

Iterate, transform, and combine sequences with readable loop patterns.

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Lists & loops easy

How to Compute Percentile Value from Sorted List in Python

Compute any percentile value from a sorted list using linear interpolation between ranks.

percentile statistics interpolation
Python 
def percentile(sorted_data, percentile_value):
    """Return the value below which `percentile_value`% of data falls."""
    if not sorted_data:
        raise ValueError("Cannot compute percentile of empty list")
    if not 0 <= percentile_value <= 100:
        raise ValueError("Percentile must be between 0 and 100")
…
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