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  2. Data Analysis Expressions - Wikipedia

    en.wikipedia.org/wiki/Data_Analysis_eXpressions

    Data Analysis Expressions (DAX) is the native formula and query language for Microsoft PowerPivot, Power BI Desktop and SQL Server Analysis Services (SSAS) Tabular models. DAX includes some of the functions that are used in Excel formulas with additional functions that are designed to work with relational data and perform dynamic aggregation.

  3. Rule of 72 - Wikipedia

    en.wikipedia.org/wiki/Rule_of_72

    The choice of number is mostly a matter of preference: 69 is more accurate for continuous compounding, while 72 works well in common interest situations and is more easily divisible. There are a number of variations to the rules that improve accuracy. For periodic compounding, the exact doubling time for an interest rate of r percent per period is

  4. Amortization calculator - Wikipedia

    en.wikipedia.org/wiki/Amortization_calculator

    Converting an annual interest rate (that is to say, annual percentage yield or APY) to the monthly rate is not as simple as dividing by 12; see the formula and discussion in APR. However, if the rate is stated in terms of "APR" and not "annual interest rate", then dividing by 12 is an appropriate means of determining the monthly interest rate.

  5. What is compound interest? How compounding works to ... - AOL

    www.aol.com/finance/what-is-compound-interest...

    If you added $500 to the minimum payment and put $766.67 to your credit card balance each month, it’d take just 15 months to pay off the balance and you’d pay $1,369.33 — or about 12% of ...

  6. Exponential smoothing - Wikipedia

    en.wikipedia.org/wiki/Exponential_smoothing

    Exponential smoothing or exponential moving average (EMA) is a rule of thumb technique for smoothing time series data using the exponential window function.Whereas in the simple moving average the past observations are weighted equally, exponential functions are used to assign exponentially decreasing weights over time.

  7. Biweekly Money-Saving Challenges To Start in 2023 - AOL

    www.aol.com/biweekly-money-saving-challenges...

    In this challenge, savers begin by saving $1 the first week and then increase the weekly amount put into savings by $1 over 52 weeks. So week one, $1 is reserved. Week 25, $25 is saved — on up ...

  8. Doubling time - Wikipedia

    en.wikipedia.org/wiki/Doubling_time

    The notion of doubling time dates to interest on loans in Babylonian mathematics. Clay tablets from circa 2000 BCE include the exercise "Given an interest rate of 1/60 per month (no compounding), come the doubling time." This yields an annual interest rate of 12/60 = 20%, and hence a doubling time of 100% growth/20% growth per year = 5 years.

  9. Decomposition of time series - Wikipedia

    en.wikipedia.org/wiki/Decomposition_of_time_series

    A seasonal pattern exists when a time series is influenced by seasonal factors. Seasonality occurs over a fixed and known period (e.g., the quarter of the year, the month, or day of the week). [1], the irregular component (or "noise") at time t, which describes random, irregular influences. It represents the residuals or remainder of the time ...