Koop, J. C. On an identity for the variance of a ratio of two random variables. (English) Zbl 0136.40905 J. R. Stat. Soc., Ser. B 26, 484-486 (1964). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 2 Documents Keywords:statistics PDFBibTeX XMLCite \textit{J. C. Koop}, J. R. Stat. Soc., Ser. B 26, 484--486 (1964; Zbl 0136.40905)