RSTHDA correlation software can be used to perform correlation analysis between two or more variables. It can be used to calculate pearson, spearman or kendall correlation coefficient.






Click here to use it.


Note that a software to compute correlation matrix is also available.


See also the top 3 correlation coefficient calculator

Correlation coefficient measures the level of the association between two variables (x and y). Pearson correlation analysis method is the most used one.

The formula for the correlation coefficient is :

\[ r = \frac{\sum{(x-m_x)(y-m_y)}}{\sqrt{\sum{(x-mx)^2}\sum{(y-my)^2}}} \]

\(m_x\) and \(m_y\) are the means of x and y variables.

The correlation coefficient can be negative, zero (no dependence) or positive.

The formula is described in details here.

Note that an online correlation coefficient calculator is available here.