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A tag is a keyword or label that categorizes your question with other, similar questions. Using the right tags makes it easier for others to find and answer your question.

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Numerical computing environment developed to allow matrix manipulations, plotting of functions and data and implementation of algorithms.
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Fixed-income instruments whose price depends in large part upon judgments of the creditworthiness of a corporation or government.
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a process that, over time, tends to drift toward its long-term mean.
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a payment made by a corporation to its shareholders, usually as a distribution of profits.
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a multivariate distribution with uniform marginal distributions. Copulas are mostly used to represent/model the structure of dependence between random variables, separately from the margin…
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A routine question from a textbook, course, or test used for a class or self-study. This community's policy is to "provide helpful hints" for self-study questions.