date:Mar 01, 2013
nine products: three cereals, two baked foods, two dairy items and two spicy meals.
Switching to the tetrad test from the triangle test allowed General Mills to better avoid two types of sampling errors, Mr. Cowden said.
Type I sensory testing errors happen when companies wrongly conclude that a difference exists in a product. For example, a company through sensory testing may conclude a reduced sugar ice cream is less sweet than the conventional ice cream when the actual sweetness is similar