How do I find the arithmetic mean of a list in Python? For example: [1, 2, 3, 4] 2.5

Apr 23, 2022 · 3 statistics.mean() works on vanilla Python lists. It does not work on numpy.ndarray s. You should use numpy.mean() instead. Also, it looks like accuracy_list is a …

Dec 2, 2013 · If you're not using numpy, the obvious way to calculate the arithmetic mean of a list of values is to divide the sum of all elements by the number of elements, which is easily …

What you want is the mean of two arrays (or vectors in math). Since Python 3.4, there is a statistics module which provides a mean() function: statistics.mean (data) Return the sample …

Sep 20, 2019 · I want to find the fastest way to compute the average of python lists. I have millions of lists stored in a dictionary, so I am looking for the most efficient way in terms for …

I am having hard time to figure out how to find min from a list for example somelist = [1,12,2,53,23,6,17] how can I find min and max of this list with defining (def) a function I do not …

Mar 20, 2013 · Working on a python assignment and was curious as to what [:-1] means in the context of the following code: instructions = f.readline()[:-1] Have searched on here on S.O. …

Jan 27, 2012 · If you skip the end index, like in your question, it would take elements from the start index (x), pick every yth element until it reaches the end of the list if y is positive and …

Sep 9, 2022 · Even if it were a numpy array, given that it's a jagged array, it wouldn't benefit from being wrapped in an ndarray anyway, so a list comp would still be the best option, in my …

Simply divide by the length of the column to get the mean. Side point: In Python 2.x, division on integers floors the decimal by default, which is why float() is called to "promote" the result to a …