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Tag: statistics

How do I calculate percentiles with python/numpy?

Is there a convenient way to calculate percentiles for a sequence or single-dimensional numpy array? I am looking for something similar to Excel’s percentile function. I looked in NumPy’s statistics reference, and couldn’t find this. All I could find is the median (50th percentile), but not something more specific. Answer You might be interested in the SciPy Stats package. It

How to efficiently calculate a running standard deviation

I have an array of lists of numbers, e.g.: I would like to efficiently calculate the mean and standard deviation at each index of a list, across all array elements. To do the mean, I have been looping through the array and summing the value at a given index of a list. At the end, I divide each value in

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