To help you better, could you clarify which estimates you are referring to? Estimates can relate to various fields such as finance, statistics, project management, etc. Here are a few common contexts:
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Statistical Estimates: These refer to approximations of population parameters based on sample data. For example, a sample mean can estimate the population mean.
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Financial Estimates: In finance or accounting, estimates are projections of future revenues, costs, or profits based on historical data and trends.
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Project Management Estimates: These involve approximations of the time, resources, and costs required to complete a project or task.
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Market Estimates: These may refer to the projected size of a market or expected sales figures based on market research.
If you can provide more context or specify the type of estimates you're asking about, I would be happy to give a more detailed explanation!