Collecting and analyzing numerical data or making numerical summaries of data.

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8
votes
2answers
485 views

How can I find the median column in a database?

I have data on period of construction for dwellings in dissemination areas. I have transferred this data to my study areas and would like to determine the median period of construction for each study ...
10
votes
3answers
482 views

How is margin of error reported on a map?

When reporting estimates you should always include the margin of error. There are conventional ways of reporting margin of error in a table, text or graph. But, how do you report margin of error for ...
3
votes
2answers
337 views

Performing statistical analysis of buffers?

I am doing a buffer analysis of incinerators and looking at the output areas within those buffers, is there a way of doing a statistical analysis of several buffers to see if there is a significant ...
2
votes
2answers
710 views

How to creat a graph from a Field values (VBA_ArcObjects)

I have a combobox that shows all fields of a shapefile. I want to get these values programmatically in a label--Count, Minimum, Maximum, Sum, Mean, Standard Deviation--and populate a graph of the ...
11
votes
4answers
542 views

Math and Stat for GIS and Computing

I am planning to do an advanced program in spatial science and engineering. It states as a requirement in the program, that the student should have a through understanding in math and statistics. So ...
3
votes
2answers
803 views

How can I track/graph arcserver usage statistics?

I’m currently using the ArcGIS Server Properties dialog in ArcCatalog to periodically check the usage statistics for our services. I’d like to be able to chart those to get a big picture view of ...
6
votes
2answers
2k views

Is it possible to access ArcGIS's table operations “Summarize…” and “Statistics…” in python?

ArcGIS has a few nifty table tools, including Summarize and Statistics. Is there a way to access them through arcpy, or will I have to hack my own methods via math and lists?
6
votes
1answer
1k views

ArcGIS median value from a layer

I've been hunting around ArcGIS 9.3 and having no success at finding a tool/function that can give me the median (not the mean/avg) tabular value of a spatial database. For example, if I have a data ...