Re: Help interpreting data

Subject: Re: Help interpreting data
From: dmbrown -at- brown-inc -dot- com
To: "TECHWR-L" <techwr-l -at- lists -dot- raycomm -dot- com>
Date: Fri, 25 Apr 2003 08:34:46 -0700

> > The data I was given are as follows:
> > the cities,
> > Agricultural/Industrial population (%) in 1980,
> > Agricultural/Industrial population (%) in 1990,
> > their percentage changes in population from 1980 to 1990.
> >
> > City A 95/5, 50/50, +95
> > City B 20/80, 50/50, -40
> > City C 80/20, 60/40, +20
> > City D 90/10, 10/90, +180
> I think the data shows that the total population of City A
> increased 95% between 1980 and 1990. In orther words, it's
> almost twice as big now.
> I don't think the third piece of data is related to the first
> two pieces.

But that's precisely what the writer has been asked to describe: the relationship between the change in total population (up by 95% in City A) and the change in distribution between agricultural and industrial workers (from 95% agricultural to only 50% agricultural in City A).

You can sort of "feel" the relationship, but I haven't been able to identify a consistent formula that can be applied.

Of course, I'm not a mathematician, so that doesn't mean a formula doesn't exist. :)



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Re: Help interpreting data: From: SteveFJong

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