"Regression techniques" refer to a set of statistical methods used to analyze and understand the relationship between two or more variables. It helps us predict or estimate the value of one variable based on the values of others. Full definition
Note that this multiple linear regression technique it makes no assumptions about various solar effects. (skepticalscience.com)
They apply regression techniques to identify each year the optimal set of factors (weighted ETFs) for explaining hedge fund returns over the prior 24 months. (cxoadvisory.com)
However, it does allow hypotheses to be tested in a way that is free of the assumptions implicit in regression techniques. (realclimate.org)