This equation is made by calculating the sum of the monthly payment savings that can be realized by refinancing into a new mortgage at a lower interest rate and determining the month in which that cumulative sum of monthly payment savings is greater than the costs of refinancing. (investopedia.com)
Our approach relies on cumulative sum scaling (CSS) normalization - a count data normalization technique - and the zero - inflated Gaussian (ZIG) model as a statistical method for detecting differential abundance of taxonomic features. (labroots.com)
To paraphrase Nobel laureate William Sharpe in The Arithmetic of Active Management, the cumulative sum of all investments equals the market return, which nets out to underperformance after fees. (us.beyondbullsandbears.com)