The coefficient of determination is used in statistical analysis to assess how well a model explains and predicts future outcomes. It's more commonly known as r-squared.

Correlation is measured through the correlation coefficient, which always returns a value between +1.0 (perfectly positively correlated) and -1.0 (perfectly negatively correlated).

How to Calculate the Correlation Coefficient A simple calculation method is to use what's known as the Pearson correlation coefficient calculator, named after the English mathematician Karl Pearson.

Spearman’s rank correlation is a statistical technique used to understand the relationship between two variables when the relationship does not conform to a linear pattern. Spearman’s rank correlation ...

In this article, we will explore the theory, assumptions and interpretation of Spearman’s rank correlation, a flexible statistical tool that assesses the strength and direction of the relationship ...