Top "Statistics" questions

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Loop over string variables in R

When programming in Stata I often find myself using the loop index in the programming. For example, I'll loop over …

r statistics stata
setting values for ntree and mtry for random forest regression model

I'm using R package randomForest to do a regression on some biological data. My training data size is 38772 X 201. I …

r statistics machine-learning regression random-forest
Simple statistics - Java packages for calculating mean, standard deviation, etc

Could you please suggest any simple Java statistics packages? I don't necessarily need any of the advanced stuff. I was …

java math statistics packages
Why am I getting "algorithm did not converge" and "fitted prob numerically 0 or 1" warnings with glm?

So this is a very simple question, just can't seem to figure it out. I'm running a logit using the …

r statistics r-zelig
R and SPSS difference

I will be analysing vast amount of network traffic related data shortly, and will pre-process the data in order to …

r statistics spss data-analysis
Pythonic way of detecting outliers in one dimensional observation data

For the given data, I want to set the outlier values (defined by 95% confidense level or 95% quantile function or anything …

python numpy matplotlib statistics statsmodels
Probability to z-score and vice versa

How do I calculate the z score of a p-value and vice versa? For example if I have a p-value …

python statistics
Two-sample Kolmogorov-Smirnov Test in Python Scipy

I can't figure out how to do a Two-sample KS test in Scipy. After reading the documentation scipy kstest I …

python numpy scipy statistics distribution
Cumulative Normal Distribution Function in C/C++

I was wondering if there were statistics functions built into math libraries that are part of the standard C++ libraries …

c++ c math statistics distribution
Using QUARTILE in an Excel pivot table to summarise data by sub-populations

I've got a large table of data in an Excel spreadsheet that, essentially, can be considered to be a collection …

excel statistics excel-2007 pivot-table data-analysis