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[–] 1HepCat 0 points 2 points (+2|-0) ago 

In my work, we usually call it 'smoothing'.

Given a population of 1000, pollsters A, B, C, D and E each sample 50 people at random. Pollster E finds results that differ somewhat significantly from the findings of A, B, C and D so he reduces confidence in his own sample because he's only got 50 data points whereas the other polls have ~200 data points combined. This might be reasonable because the relative weakness of E's sample makes it more sensitive to outliers.