statistical correlation

Statistical correlation measures the relationship between two variables, indicating how changes in one may relate to changes in the other. A positive correlation means that as one variable increases, the other tends to increase too; a negative correlation suggests that as one increases, the other decreases. Correlation is expressed on a scale from -1 to 1, where 0 indicates no relationship. It’s important to note that correlation does not imply causation; just because two variables are correlated doesn’t mean one causes the other. Understanding correlation helps in identifying patterns and making predictions based on observed data.