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How to Replace Outliers Beyond Threshold with Cap in Python

Replace values that fall below a lower threshold or above an upper threshold by capping them to the threshold values using a simple Python function.

outliers capping data-cleaning

Python

def replace_outliers_with_cap(data, lower_threshold=None, upper_threshold=None):
    """Replace values beyond given thresholds with the threshold values (capping)."""
    if lower_threshold is None and upper_threshold is None:
        raise ValueError("At least one threshold must be provided.")
    
    capped_data = …

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