Third-person singular simple present indicative form of regress

Undergoing regression

The condition of being regressive.

The quality of being regressive.

in a regressive manner

Alternative form of regressible

Able to regress or be regressed.

plural of regressivity

(statistics) The phenomenon by which extreme examples from any set of data are likely to be followed by examples which are less extreme; a tendency towards the average of any sample. For example, the offspring of two very tall individuals tend to be tall, but closer to the average (mean) than either of their parents.

(data mining) A data-analysis method that recursively partitions data into sets each of which are simply modeled using regression methods. / A classification and regression tree.