Top "Statistics" questions

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Perform a Shapiro-Wilk Normality Test

I want to perform a Shapiro-Wilk Normality Test test. My data is csv format. It looks like this: heisenberg HWWIchg 1 …

r statistics normal-distribution
What exactly does numpy.exp() do?

I'm very confused as to what np.exp() actually does. In the documentation it says that it: "Calculates the exponential …

python numpy statistics exp
Calculate mean and standard deviation from a vector of samples in C++ using Boost

Is there a way to calculate mean and standard deviation for a vector containing samples using Boost? Or do I …

c++ algorithm boost statistics mean
np.mean() vs np.average() in Python NumPy?

I notice that In [30]: np.mean([1, 2, 3]) Out[30]: 2.0 In [31]: np.average([1, 2, 3]) Out[31]: 2.0 However, there should be some differences, since after all …

python numpy statistics average mean
How to calculate cumulative normal distribution?

I am looking for a function in Numpy or Scipy (or any rigorous Python library) that will give me the …

python numpy scipy statistics
What is the difference between Multiple R-squared and Adjusted R-squared in a single-variate least squares regression?

Could someone explain to the statistically naive what the difference between Multiple R-squared and Adjusted R-squared is? I am doing …

r statistics regression
Fitting empirical distribution to theoretical ones with Scipy (Python)?

INTRODUCTION: I have a list of more than 30,000 integer values ranging from 0 to 47, inclusive, e.g.[0,0,0,0,..,1,1,1,1,...,2,2,2,2,...,47,47,47,...] sampled from some continuous …

python numpy statistics scipy distribution
How to add header to a dataset in R?

I need to read the ''wdbc.data' in the following data folder: http://archive.ics.uci.edu/ml/machine-learning-databases/breast-cancer-wisconsin/ …

r dataset statistics
Why is the Fibonacci series used in agile planning poker?

When estimating the relative size of user stories in agile software development the members of the team are supposed to …

math statistics agile agile-project-management
How to efficiently calculate a running standard deviation?

I have an array of lists of numbers, e.g.: [0] (0.01, 0.01, 0.02, 0.04, 0.03) [1] (0.00, 0.02, 0.02, 0.03, 0.02) [2] (0.01, 0.02, 0.02, 0.03, 0.02) ... [n] (0.01, 0.00, 0.01, 0.05, 0.03) What I would like to do is efficiently calculate …

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