/**
 * Compound Annual Growth Rate (CAGR) is the year-over-year growth rate of an investment over a specified period of time
 *
 * @see http://www.investopedia.com/terms/c/cagr.asp
 *
 * @param beginningValue
 * @param endingValue
 * @param numOfPeriods
 * @returns
 */
export declare function CAGR(beginningValue: number, endingValue: number, numOfPeriods: number): number;