Search Results - subject:"coefficient of variation"

Spurious correlation between ratios with a common divisor

Kim, Ji-Hyun - In: Statistics & Probability Letters 44 (1999) 4, pp. 383-386

One hundred years ago Karl Pearson derived an approximate formula for the correlation between ratios with a common divisor and cautioned to be wary of correlating ratios. The exact formula for the correlation between ratios is derived. It can provide a better reference point of no connection...

Persistent link: https://www.econbiz.de/10005138370

Variability Functions for Parametric-Decomposition Approximations of Queueing Networks

Whitt, Ward - In: Management Science 41 (1995) 10, pp. 1704-1715

We propose an enhancement to the parametric-decomposition method for calculating approximate steady-state performance measures of open queueing networks with non-Poisson arrival processes and nonexponential service-time distributions. Instead of using a variability parameter c<sub>a</sub><sup>2</sup> for each arrival...

Persistent link: https://www.econbiz.de/10009204342

Statistical tests involving several independent gamma distributions

Tripathi, Ram; Gupta, Ramesh; Pair, Robert - In: Annals of the Institute of Statistical Mathematics 45 (1993) 4, pp. 773-786

Persistent link: https://www.econbiz.de/10005169148

Some exact expressions for the mean and higher moments of functions of sample moments

Bowman, K.; Shenton, L. - In: Annals of the Institute of Statistical Mathematics 44 (1992) 4, pp. 781-798

Persistent link: https://www.econbiz.de/10005395858

The coefficient of variation biplot

Underhill, Leslie - In: Journal of Classification 7 (1990) 2, pp. 241-256

Persistent link: https://www.econbiz.de/10005757505

Conditional information for an inverse Gaussian distribution with known coefficient of variation

Hirano, Katuomi; Iwase, Kōsei - In: Annals of the Institute of Statistical Mathematics 41 (1989) 2, pp. 279-287

Persistent link: https://www.econbiz.de/10005760316

Aid Volatility: Is It a Problem in Tuvalu?

Lulai, Letasi - Crawford School of Public Policy, Australian National …

aid volatility matters in Tuvalu—a small aid recipient country in the Pacific. The study finds that, with a coefficient of … variation of 0.49, aid volatility in Tuvalu is significant. It is also found that project aid is more volatile than aid that …

Persistent link: https://www.econbiz.de/10011031854