Correlation coefficient usually deployed in the space syntax analysis is Pearson’s r, a measure of the strength and direction of the linear relationship between two variables that is defined in terms of the sample covariance and the variables divided by their standard deviation.

# Correlation coefficient

**Sources**

Spiegel, M. (1992) “Correlation Theory.” Ch14 in Theory and Problems of Probability and Statistics, 2nd ed. New York: McGraw-Hill, pp. 294-323.