If there are 10 brands of a certain product on which the researcher wants similarity judgments from a respondent, as many as 45 paired judgments can be required.This maximum is determined by the formula nn - 1) / 2.

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The formula for calculating the number of paired judgments needed is (n(n-1))/2, where n is the number of brands being compared. So, for 10 brands, it would be (10(10-1))/2 = 45.

If There Are 10 Brands of a Certain Product on Which