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The positive predictive value (PPV), or precision, is defined as = + = where a "true positive" is the event that the test makes a positive prediction, and the subject has a positive result under the gold standard, and a "false positive" is the event that the test makes a positive prediction, and the subject has a negative result under the gold standard.
The net present value (NPV) or net present worth (NPW) [1] is a way of measuring the value of an asset that has cashflow by adding up the present value of all the future cash flows that asset will generate. The present value of a cash flow depends on the interval of time between now and the cash flow because of the Time value of money (which ...
Pay-per-view (PPV) is a type of pay television or webcast service that enables a viewer to pay to watch individual events via private telecast. Events can be purchased through a multichannel television platform using their electronic program guide , an automated telephone system, or through a live customer service representative .
PPV = True positive / Tested positive If sensitivity, specificity, and prevalence are known, PPV can be calculated using Bayes theorem. Let P ( User | Positive ) {\displaystyle P({\text{User}}\vert {\text{Positive}})} mean "the probability that someone is a cannabis user given that they test positive," which is what is meant by PPV.
Accounting. A trial balance is an internal financial statement that lists the adjusted closing balances of all the general ledger accounts (both revenue and capital) contained in the ledger of a business as at a specific date. This list will contain the name of each nominal ledger account in the order of liquidity and the value of that nominal ...
Accounting equation. The fundamental accounting equation, also called the balance sheet equation, is the foundation for the double-entry bookkeeping system and the cornerstone of the entire accounting science. Like any equation, each side will always be equal. In the accounting equation, every transaction will have a debit and credit entry, and ...
The Penalized Present Value (PPV) is a method of capital budgeting under risk, where the value of the investment is "penalized" as a function of its risk. It was developed by Fernando Gómez-Bezares in the 1980s. Method. PPV is best understood by comparison to two other approaches where a penalty is applied for risk:
In pattern recognition, information retrieval, object detection and classification (machine learning), precision and recall are performance metrics that apply to data retrieved from a collection, corpus or sample space. Precision (also called positive predictive value) is the fraction of relevant instances among the retrieved instances.