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# Variance rule

Specifies the permitted minimum or maximum quantity of securities that can be delivered to satisfy a TBA trade. For Ginnie Mae, Fannie Mae, and Feddie Mac pass-through securities, the accepted variance is plus or minus 2.499999 percent per million of the par value of the TBA quantity. The New York Times Financial Glossary

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• variance rule — Specifies the permitted minimum or maximum quantity of securities that can be delivered to satisfy a TBA trade. For Ginnie Mae, Fannie Mae, and Freddie Mac pass through securities, the accepted variance is plus or minus 2.499999 % per million of… …   Financial and business terms

• variance — [ver′ē əns, var′ē əns] n. [OFr < L variantia < L varians, prp. of variare, to VARY] 1. the quality, state, or fact of varying or being variant; a changing or tendency to change 2. degree of change or difference; divergence; discrepancy 3.… …   English World dictionary

• Variance — A measure of dispersion of a set of data points around their mean value. The mathematical expectation of the squared deviations from the mean. The square root of the variance is the standard deviation. The New York Times Financial Glossary * * *… …   Financial and business terms

• variance — Statistical term that quantifies the dispersion of data such as rates or prices around the mean. For example, highly volatile rates are rates that are sometimes high above the mean and sometimes way below the mean. Less volatile rates are… …   Financial and business terms

• variance — Civil and criminal practice. A discrepancy or disagreement between two instruments or two pleading allegations in the same cause, which should by law be entirely consonant. Thus, if the evidence adduced by the plaintiff does not agree with the… …   Black's law dictionary

• Variance inflation factor — In statistics, the variance inflation factor (VIF) is a method of detecting the severity of multicollinearity. More precisely, the VIF is an index which measures how much the variance of a coefficient (square of the standard deviation) is… …   Wikipedia

• variance — noun Date: 14th century 1. the fact, quality, or state of being variable or variant ; difference, variation < yearly variance in crops > 2. the fact or state of being in disagreement ; dissension, dispute 3. a disagreement between two parts of… …   New Collegiate Dictionary

• rule — A criterion, standard, or guide governing a procedure, arrangement, action, etc. SEE ALSO: law, principle, theorem. [O. Fr. reule, fr. L. regula, a guide, pattern] Abegg r. the tendency of the sum of the …   Medical dictionary

• variance — noun 1》 (usu. in phr. at variance with) the fact or quality of being different or inconsistent.     ↘the state of disagreeing or quarrelling.     ↘chiefly Law a discrepancy between two statements or documents. 2》 US Law an official dispensation… …   English new terms dictionary

• Oja's rule — Oja s learning rule, or simply Oja s rule, named after a Finnish computer scientist Erkki Oja, is a model of how neurons in the brain or in artificial neural networks change connection strength, or learn, over time. It is a modification of the… …   Wikipedia