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  2. Operating leverage - Wikipedia

    en.wikipedia.org/wiki/Operating_leverage

    Operating leverage can also be measured in terms of change in operating income for a given change in sales (revenue).. The Degree of Operating Leverage (DOL) can be computed in a number of equivalent ways; one way it is defined as the ratio of the percentage change in Operating Income for a given percentage change in Sales (Brigham 1995, p. 426):

  3. Leverage (finance) - Wikipedia

    en.wikipedia.org/wiki/Leverage_(finance)

    In finance, leverage, also known as gearing, is any technique involving borrowing funds to buy an investment.. Financial leverage is named after a lever in physics, which amplifies a small input force into a greater output force, because successful leverage amplifies the smaller amounts of money needed for borrowing into large amounts of profit.

  4. Discounted cash flow - Wikipedia

    en.wikipedia.org/wiki/Discounted_cash_flow

    The discounted cash flow (DCF) analysis, in financial analysis, is a method used to value a security, project, company, or asset, that incorporates the time value of money.

  5. PS Power and Sample Size - Wikipedia

    en.wikipedia.org/wiki/PS_Power_and_Sample_Size

    The P program can be used for studies with dichotomous, continuous, or survival response measures. The user specifies the alternative hypothesis in terms of differing response rates, means, survival times, relative risks, or odds ratios.

  6. David X. Li - Wikipedia

    en.wikipedia.org/wiki/David_X._Li

    David X. Li (Chinese: 李祥林; pinyin: Lǐ Xiánglín [1] born Nanjing, China in the 1960s) is a Chinese-born Canadian quantitative analyst and actuary who pioneered the use of Gaussian copula models for the pricing of collateralized debt obligations (CDOs) in the early 2000s.

  7. DFFITS - Wikipedia

    en.wikipedia.org/wiki/DFFITS

    In statistics, DFFIT and DFFITS ("difference in fit(s)") are diagnostics meant to show how influential a point is in a linear regression, first proposed in 1980. [ 1 ] DFFIT is the change in the predicted value for a point, obtained when that point is left out of the regression:

  8. Linear trend estimation - Wikipedia

    en.wikipedia.org/wiki/Linear_trend_estimation

    Linear trend estimation is a statistical technique used to analyze data patterns. Data patterns, or trends, occur when the information gathered tends to increase or decrease over time or is influenced by changes in an external factor.

  9. Data query language - Wikipedia

    en.wikipedia.org/wiki/Data_query_language

    These sub-languages are mainly categorized into four categories: a data query language (DQL), a data definition language (DDL), a data control language (DCL), and a data manipulation language (DML). Sometimes a transaction control language (TCL) [1] is argued to be part of the sub-language set as well.