interquartile_range.py

# Generalization of median is quantile. Which represent the value less than which a certain percentile of the data lies.

num = [100, 49, 41, 40, 25]

def quantile(x, p):
        """returns the pth-percentile value in x data list"""
        p_index = int(p * len(x))
        return sorted(x)[p_index]


print("quantile",quantile(num, 0.10))

def interquartile_range(data):
        return quantile(data,0.75) - quantile(data,0.25)


print("interquartile_range:",interquartile_range(num))