Data Covariance

Data covariance is a statistical measure that indicates how two variables change together. If both variables tend to increase or decrease together, they have positive covariance. If one increases while the other decreases, they have negative covariance. Essentially, it helps to understand the relationship between two data sets. For instance, if we looked at temperature and ice cream sales, a positive covariance would suggest that higher temperatures lead to increased ice cream sales, while negative covariance would indicate that as one goes up, the other tends to go down.