The coefficient of variation (COV) is the ratio of the standard deviation of a data set to the expected mean. Investors use it to determine whether the expected return of the investment is worth the ...

Searls in 1964 showed that when the coefficient of variation is known, the sample mean is dominated with respect to mean squared error by an improved estimator that ...

Sankhyā: The Indian Journal of Statistics, Series B (1960-2002), Vol. 38, No. 1 (Feb., 1976), pp. 62-67 (6 pages) Positive valued estimators are proposed for the positive mean of a normal distribution ...