In an era driven by complex data, scientists are increasingly encountering information that doesn't lie neatly on flat, ...

Samantha (Sam) Silberstein, CFP®, CSLP®, EA, is an experienced financial consultant. She has a demonstrated history of working in both institutional and retail environments, from broker-dealers to ...

Julia Kagan is a financial/consumer journalist and former senior editor, personal finance, of Investopedia. A static budget remains unchanged regardless of fluctuations in sales or production volumes.