In statistics, pooled variance (also known as combined variance, composite variance, or overall variance, and written ) is a method for estimating variance of several different populations when the mean of each population may be different, but one may assume that the variance of each population is the same.

(finance) A group of investment funds that are aggregated.

Mixed blood samples for testing.

The Pooled Income Fund is a type of charitable mutual fund or charitable trust that pools the securities or cash separately donated by an individual, a family or a corporation to a charity, which is then invested to provide dividends for both the donor's beneficiary and charity.