Marginal cost is the change in total cost that comes from making or producing one additional item.

A linear relationship (or linear association) is a statistical term used to describe the directly proportional relationship between a variable and a constant.

The experts at Forbes Advisor put together the essential soft skills that employers look for more in potential candidates.

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But stingy pay and benefits don’t necessarily translate into lower costs in the long run. A version of this article appeared in the December 2006 issue of Harvard Business Review.