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Stats & GIS

Stats & GIS. Spring 2009. OAK-examples.mxd. LOOK!. 1 std dev. Mean=0.43. Why does ArcGIS switch to a two color scale when I use standard deviation?. What about Bivariate Questions?. Median % vacant is about 3.5% (in 2000). Owner Occupancy and Vacancy. Median owner occupancy was ~36%

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Stats & GIS

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  1. Stats & GIS Spring 2009

  2. OAK-examples.mxd

  3. LOOK! 1 std dev Mean=0.43

  4. Why does ArcGIS switch to a two color scale when I use standard deviation?

  5. What about Bivariate Questions?

  6. Median % vacant is about 3.5% (in 2000)

  7. Owner Occupancy and Vacancy • Median owner occupancy was ~36% • Median vacant unit rate was ~3.5% • Can I map above and below on both variables?

  8. It turns out that… • “TRUE” = -1 • “False” = 0

  9. And so I can create a new field and code it … • If %VAHU<median add zero • If % VAHU>median add one • If %OOHU<median add zero • If %OOHU>median add two

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