COMPUTING SUM OF PRODUCTS ABOUT THE MEAN WITH PAIRWISE ALGORITHMS

We discuss pairwise algorithms, a kind of computational algorithm whic h can be useful in dynamically updating statistics as new samples of d ata are collected. Since test data are usually collected through time as individual data sets, these algorithms would be profitably used in computer programs to treat this situation. Pairwise algorithms are pre sented for calculating the sum of products of deviations about the mea n for adding a sample of data (or removing one) to the whole data set.