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

I can't get the average or mean of a column in pandas. A have a dataframe. Neither of things I tried below gives me the average of the column weight >>> allDF ID birth...

python arrays multidimensional-array numpy mean edited Aug 28, 2018 at 2:20 TajyMany 535 8 20

Furthermore, the numpy functions proposed above allow for parameter ddof (the number of degrees of freedom), which allows to obtain unbiased variance estimates (contrary to what is …

Is there a built-in or standard library method in Python to calculate the arithmetic mean (one type of average) of a list of numbers?

There doesn’t seem to be any function in NumPy or SciPy that simply calculate the moving average, leading to convoluted solutions. My question is twofold: What's the easiest way to …

If you want to use raw python rather than numpy or panda, you can use the python stats module to find the median of the upper and lower half of the list: >>> import statistics as stat

Since Python 3.4 / PEP450 there is a statistics module in the standard library, which has a method stdev for calculating the standard deviation of iterables like yours:

I also have row_index list which contains, which rows to be considered to take mean. I want to calculate mean on say columns 2,5,6,7 and 8. Can we do it with some function for dataframe …

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 …