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 ...

Correlation coefficients range from -1 to +1, indicating the strength of relationships between variables. Investors use correlation coefficients for portfolio diversification to reduce risk.

When an employee works more than a certain number of hours a day or week, he typically receives extra pay called "overtime." He also may receive extra pay when he works on a holiday or under unusual ...