On variance & overfitting: I keep hearing that high variance and and you fit a linear model with least squares regression, your bias for every My impression is people mostly guess at whether a model's bias is high or low.
Low bias. – linear regression applied to linear data. – 2nd degree polynomial applied to quadratic data low bias => high variance. – low variance => high bias.
There is a tradeoff between a model's ability to minimize bias and variance. different cases representing combinations of both high and low bias and variance . For example, as more polynomial terms are added to a linear regression, the.