Top "Correlation" questions

For questions regarding interdependence of variable quantities.

SQL why is SELECT COUNT(*) , MIN(col), MAX(col) faster then SELECT MIN(col), MAX(col)

We're seeing a huge difference between these queries. The slow query SELECT MIN(col) AS Firstdate, MAX(col) AS Lastdate …

sql sql-server performance statistics correlation
python - cannot make corr work

I'm struggling with getting a simple correlation done. I've tried all that was suggested under similar questions. Here are the …

python-3.x pandas numpy correlation
Canonical Correlation Analysis in R

I'm using R (and package CCA) and trying to perform regularized canonical correlation analysis with two variable sets (species abundances …

r analysis correlation
Find groups with high cross correlation matrix in Matlab

Given a lower triangular matrix (100x100) containg cross-correlation values, where entry 'ij' is the correlation value between signal 'i' and …

matlab cluster-analysis correlation
Create clusters using correlation matrix in Python

all, I have a correlation matrix of 21 industry sectors. Now I want to split these 21 sectors into 4 or 5 groups, with …

python matrix block correlation
Intraclass Correlation in Python Module?

I'm looking to calculate intraclass correlation (ICC) in Python. I haven't been able to find an existing module that has …

python statistics correlation
What is a fast way to compute column by column correlation in matlab

I have two very large matrices (60x25000) and I'd like to compute the correlation between the columns only between the …

matlab matrix correlation
Correlation matrix plot with ggplot2

I want to create a correlation matrix plot, i.e. a plot where each variable is plotted in a scatterplot …

r ggplot2 correlation
R Error in correlation test. 'x' must be a numeric vector

I know that this question has been asked before but not in the context i am asking it now. I …

r correlation pearson
point biserial and p-value

I am trying to get a point biserial correlation between a continuous vocabulary score and syntactic productivity (dichotomous: productive vs …

r correlation binomial-coefficients