An example of a relevant cost to a decision would include a

Relevant cost is teh cost that affects a decision.

An example of a relevant cost to a decision would include: Cost of POS (Point of Sale), Cost of POS training, Cost of Maintenance and Materials.

Non relevant costs on the other hand are costs that do not affect the decision. Labor Cost is example of non relevant Cost.

the u.s. census bureau produces data on the population and economy nationwide. it can you to analyze the kind of people living in your neighborhood. it does not show you the market of people willing to buy your product or an existing market for your product. that will require more market research. the census bureau only gives you an insight to the demographics in your area.