Talk:Quartile coefficient of dispersion

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[edit] agreement on definition?

How accepted is this definition? In a quick google I found 2 others, one using the mean in the divisor and one using the median. Melcombe (talk) 10:54, 1 April 2008 (UTC)

Well, I'm finding an item published in 1942 whose definition agrees with what's here. Another journal article gives
{Q_3 - Q_1 \over 2\times\text{median}}.
Either of these can make a certain amount of sense for positive-valued variables. The one in 1942 was on distribution of incomes. I'll come back to this...... Michael Hardy (talk) 14:19, 1 April 2008 (UTC)

For the data set provide, the two definitions give the same result. —Preceding unsigned comment added by Seeker Seeking (talk • contribs) 07:09, 3 May 2008 (UTC)