Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Getty Images / juststock The forward ...

Daniel Jassy, CFA, is an Investopedia Academy instructor and the founder of SPYderCRusher Research. He contributes to Excel and Algorithmic Trading. Robert Kelly is managing director of XTS Energy LLC ...

How do you calculate capability indices? Capability analysis is an essential tool for statistical process control (SPC) and process improvement, applicable to a variety of environments from hospitals ...