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Message: <blockquote data-quote="topkollek" data-source="post: 29179582" data-attributes="member: 510150">Law of large numbersඑහෙම කරන්නෙ නෑ<hr />Estimating the amount of dormant currency notes (i.e., physical notes that are not in active circulation) can be challenging for central banks. However, they use a combination of methods to make these estimates. Here's a general approach:<ol> <li data-xf-list-type="ol">Issuance and Redemption Data: Central banks keep track of the amount of currency they issue and the amount that is returned to them. By comparing the number of new notes released into circulation and the number of old, worn-out, or damaged notes being returned, they can estimate the net change in currency in circulation.</li> <li data-xf-list-type="ol">Sample Surveys: Periodic surveys can be conducted among a representative sample of the population or specific entities like banks to gauge how much cash people and institutions typically hold. This data can be extrapolated to provide an estimate for the entire population or banking system.</li> <li data-xf-list-type="ol">Currency in Banking System: Banks hold a significant portion of the country's currency in their vaults. Central banks can track the amount of currency stored in banks and use this data as a proxy for the amount in active circulation. The difference between total issued currency and that held by banks can give an estimate of the currency with the public.</li> <li data-xf-list-type="ol">Economic Indicators: Economic metrics like the velocity of money (how quickly money changes hands in an economy) can be useful. If the velocity of a particular denomination of currency drops significantly, it might indicate that more of that currency is becoming dormant.</li> <li data-xf-list-type="ol">Lifespan of Notes: Currency notes have a typical lifespan based on wear and tear. By assessing the age distribution of notes returned to the central bank, it's possible to make assumptions about the quantity and age distribution of notes still in circulation.</li> <li data-xf-list-type="ol">Special Circumstances: Events like demonetization (where a government invalidates a particular denomination of currency) can provide direct data on dormant notes. When people are required to exchange old notes for new ones, the central bank can directly measure how much of the old currency was dormant.</li> <li data-xf-list-type="ol">Statistical Models: Central banks can use statistical methods and modeling techniques, taking into account various factors like economic growth, inflation rate, interest rates, and other monetary indicators, to predict the amount of currency in circulation versus dormant.</li> <li data-xf-list-type="ol">Informal Sectors and Overseas Holdings: Some countries have a significant amount of their currency held abroad or in the informal sector. Special studies, intelligence reports, or cooperation with international entities can help estimate these amounts.</li> </ol>It's important to note that even with these methods, any estimate of dormant currency notes will have a degree of uncertainty. Central banks typically use a combination of these techniques to refine their estimates and better understand the state of physical currency in their economy.ChatGPT4------ Post added on [DATETIME="UT"]1694115017[/DATETIME]</blockquote>

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