Re: A Purpose For Frt Car Distribution Studies. Was: Re: Re


Malcolm Laughlin <mlaughlinnyc@...>
 

Steve Lucas writes:

"Tony--

After reading this thread for some time, I have to agree with your basic premise. Most major through transcon routes such as the UP in Wyoming would very likely have over a given period, percentages of each road's boxcars in keeping with the national averages. The law of averages supports this."
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I say that statement is dead wrong.
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Well...perhaps someone's law of averages supports it but the data does not. Can you explain that?
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The law of averages, or the law of large numbers, works only for homogeneous data sets. The national box car fleet did not meet that qualification. It could be reasonably be said to apply to the percentages of NYC, PRR and B&O amrks on the UP, but not to the number of thsoe marks releative to UP direct connsections.



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

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