What is the proper term for this kind of aggregation?

Question

I have a bunch of values, which I aggregate as follows:

Order them from worst to best (whatever this means). The visual image is that of a horizontal line and the worst item is to the left of the best item.
Return the item which has 25% (50%/75%) of the items to its left.

I am sure there is a proper term for this kind of aggregation, I just do not know what it is.

Much appreciated.

If this is it - why not arrange it as an answer, so I could credit you? — mark, May 07 '13 at 15:00

score 1 · Accepted Answer · answered May 07 '13 at 15:04

1

I think you're referring to the lower quartile: http://en.wikipedia.org/wiki/Quartile

answered May 07 '13 at 15:04

user73445

1 Answers1