You are not currently logged in.
Access JSTOR through your library or other institution:
On Rounding Percentages
Persi Diaconis and David Freedman
Journal of the American Statistical Association
Vol. 74, No. 366 (Jun., 1979), pp. 359-364
Stable URL: http://www.jstor.org/stable/2286335
Page Count: 6
You can always find the topics here!Topics: Proportions, Probabilities, Statistics, Randomness, Sample size, Random variables, Integers, Former slaves, Mathematical tables, Mathematical theorems
Were these topics helpful?See something inaccurate? Let us know!
Select the topics that are inaccurate.
Preview not available
We assess the probability that a table of rounded percentages adds to 100 percent. This extends work of Mosteller, Youtz, and Zahn (1967) who found that the chance of rounding to 100 percent was about 3/4 with three categories, 2/3 with four categories, and (6/π c)1/2 with a large number c of categories. We give a mathematical treatment of this phenomenon when the table is drawn from a multinomial distribution or from a mixture of multinomial distributions. We discuss the very different small-sample behavior and treat Benford's leading digit data as an example.
Journal of the American Statistical Association © 1979 American Statistical Association