Answer
Barnes & Noble could segment its company wide performance by individual store, by sales channel (i.e., brick-and-mortar versus on-line), and by product line (e.g. non-fiction books, fiction books, music CDs, toys, etc.). Procter & Gamble could segment its performance by product category (e.g., beauty and grooming, household care, and health and well-being), product line (e.g., Crest, Tide, and Bounty), and stock keeping units (e.g., Crest Cavity Protection toothpaste, Crest Extra Whitening toothpaste, and Crest Sensitivity toothpaste).
Work Step by Step
As given above