Natural logarithm


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Natural logarithm

Logarithm to the base e (approximately 2.7183).

Natural Log

In mathematics, the exponent to which one must raise the number e (a mathematical constant approximately equal to 2.718) to produce a given number. The natural log has a number of applications across mathematics, including in compound interest.
References in periodicals archive ?
Since only 68 percent of veterans had any Medicare costs we used 2-stage modeling for testing the association of a dementia diagnosis with Medicare costs, first estimating a model for any cost, and then, among those with Medicare costs, the association with the natural logarithm of costs.
Recall that the baseline specification already includes the natural logarithm of a country's GDP per capita, its GDP growth rate, and region fixed effects.
Analytics ADEP Ratio of the firm's sales to the total Audit Analytics sales of all clients of its auditor Compustat LOGASSETS Natural logarithm of total assets at Compustat firm's fiscal year-end VARIANCE Variance of returns of the firm over its CRSP fiscal year LOGCEOV Natural logarithm of (1+ dollar change ExecuComp in CEO's stock and option portfolio for a 1% change in stock return volatility) (in millions).
Notably, the transformation of the original values of the variables in natural logarithms increased the correlation coefficients with TBCOEF10, which was favorable for the development of the model.
Ln (FERC)= Natural logarithm of fertilizer consumption i.e.
Total securities = the natural logarithm of the total securities
In order to study economies of scale with respect to size as measured by total revenue of a firm, translog cost function is estimated for total expenses, total distribution expenses, and total general administrative and selling expenses with respect to the natural logarithm of total revenue with total assets as a control variable for 19 companies.
Because the response variable in each case was the ratio of the natural logarithm of raw counts in successive years, we used as independent variables the ratios of the natural logarithms of the putative explanatory variables in those same 2 years.
Game outcomes (coded as previously described and hereafter called WIN) were regressed on the team's Gini ratio (GINI) and the natural logarithm of average team salary (lnSALARY).
We measure size as the natural logarithm of total admitted general account assets.