O probabilitate statistica a limitelor de eroare din jurul unui item, limite in care itemul este probabil ca se va incadra. In advertising/marketing, ca si in alte domenii, limitele increderii se cer a fi 95% (adica sunt 19 sanse din 20 ca itemul sa se incadreze intre aceste margini).
A statistical probability of the range of error around an estimated figure within which the true figure is likely to lie. In advertising/marketing, as elsewhere, confidence limits are generally required to be 95% (meaning that there are 19 chances in 20 that the true figure lies within the range).