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The weighted-average loan age (WALA) is measure used in pools of mortgage-backed securities that defines the average number of months since the date of note origination of all the loans in a pool weighted by remaining principal balance. [1] In the calculation each loan's size is in proportion to its aggregate total of the pool. [2]
ARMA is appropriate when a system is a function of a series of unobserved shocks (the MA or moving average part) as well as its own behavior. For example, stock prices may be shocked by fundamental information as well as exhibiting technical trending and mean-reversion effects due to market participants.
The original model uses an iterative three-stage modeling approach: Model identification and model selection: making sure that the variables are stationary, identifying seasonality in the dependent series (seasonally differencing it if necessary), and using plots of the autocorrelation (ACF) and partial autocorrelation (PACF) functions of the dependent time series to decide which (if any ...
Student loan calculator. If you’re considering a student loan to pay for college or trade school, you can use a student loan calculator to estimate how much you’ll pay when you graduate. The ...
An amortization calculator is used to determine the periodic payment amount due on a loan (typically a mortgage), based on the amortization process. [ 1 ] The amortization repayment model factors varying amounts of both interest and principal into every installment, though the total amount of each payment is the same.
Loan type. Purpose. SBA loans. SBA loans are backed by the U.S. government and can be used for a variety of business expenses, including long-term fixed assets and operating capital.
Pay attention to cash flow and assets. Most lenders need you to show a current flow of revenue or capital to get a loan. But some loans look beyond cash flow. Accounts receivable financing lets ...
Polynomials of the lag operator can be used, and this is a common notation for ARMA (autoregressive moving average) models. For example, = = = (=) specifies an AR(p) model.A polynomial of lag operators is called a lag polynomial so that, for example, the ARMA model can be concisely specified as