Explain the concepts of product-mix width, length, depth, and consistency.
Answer: The width of a product mix refers to how many different product lines the company carries. The length of a product mix refers to the total number of items in the mix. The depth of a product mix refers to how many variants are offered of each product in the line and is determined by dividing the total number of items by the number of lines. The consistency of the product mix refers to how closely related the various product lines are in end use, production requirements, distribution channels, or some other way.