A utility function measures a consumer’s preference and satisfaction with different goods or services. As part of rational choice theory, it helps economists analyze how consumers make decisions to ...

Will Kenton is an expert on the economy and investing laws and regulations. He previously held senior editorial roles at Investopedia and Kapitall Wire and holds a MA in Economics from The New School ...

Although there are many functions in the base package of R, sometimes there may not be a function that does exactly what you want. In this case, R allows users to create their own functions and call ...

Sean Ross is a strategic adviser at 1031x.com, Investopedia contributor, and the founder and manager of Free Lances Ltd. Gordon Scott has been an active investor and technical analyst or 20+ years. He ...

Track creditors, interest rates, and payments—and compare payoff strategies—with Microsoft Excel. A comprehensive debt spreadsheet transforms overwhelming financial obligations into manageable chunks ...