Re: A Purpose For Frt Car Distribution Studies


Malcolm Laughlin <mlaughlinnyc@...>
 

It would appear that we are headed down the road of confusing average
and mean. Which are totally different. Given 10,000 freight cars past a given point, the average will most likely mimic the national fleet based on Tim and Dave's data. However, the mean may be skewed in one direction or the other significantly.
====================

Tim's data doesn't say that. He has the percentages of system and foreign ownerships on line and off line. It's a big leap of faith to extrapolate that distribution of individual ownerships.


Malcolm Laughlin, Editor 617-489-4383
New England Rail Shipper Directories
19 Holden Road, Belmont, MA 02478

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