Variance Bound

Variance bound is a way to measure how much a random variable's values tend to spread out or vary around its average. It provides an estimate or limit of the maximum amount of variability we might see in data. Think of it as a safety net that ensures the variability won't be larger than a certain value, making it useful for assessing the reliability and stability of data or models. Essentially, variance bounds help us understand and control the uncertainty or fluctuations in random processes or predictions.