a process for mixing a lot of separate approximations of a parameter into a sole approximation. This might be done by computing the average of the separate approximations, with or without weighting. However, be aware that a pooled approximation isn't attained by merely mixing all information into a sole information set and computing the approximation of the parameter on the massed information points.
POOLING: "The concept of pooling is more popular for informal experiments that are not controlled."
