The 90/10 retirement investment strategy involves investing 90% of investment capital in low-cost S&P 500 index funds, and the remaining 10% in short-term government bonds.
The chi-square statistic (χ2) is a measure of the difference between the observed and expected frequencies of the outcomes of a set of events or variables.
The chief operating officer (COO) is the senior officer tasked with overseeing the day-to-day administrative and operational functions of the business.