topic Re: Mean Center and range around the Mean in Spatial Statistics Questions

Mean Center and range around the Mean

HushamMohamed — Sun, 30 Jul 2017 07:48:12 GMT

I have an incident Point feature class. I calculate the Mean Center.

Now I would like to calculate:

25% of the incidents compared to the Mean Center Then draw a circle to cover the 25%.

50% incidents compared to the Mean Center Then draw a circle to cover the 50%

What percentage of the incidents are closer to the xx office compared to yy office.

Any Idea or Model or Python script.

Thanks

Re: Mean Center and range around the Mean

DanPatterson_Retired — Sun, 30 Jul 2017 09:18:18 GMT

Standard Distance ... How it works... is what you want to use

Re: Mean Center and range around the Mean

HushamMohamed — Sun, 30 Jul 2017 13:28:49 GMT

Thank you Dan, Not exactly what I want, I am not Measuring the compactness of a distribution this way. I am looking to draw some thing like buffers according to the Percentage I mentioned from the mean Center-

besides need to answer the question of : What percentage of the incidents are closer to the xx office compared to yy office ( I have 2 offices, point feature.

Thanks

Re: Mean Center and range around the Mean

DanPatterson_Retired — Sun, 30 Jul 2017 15:11:16 GMT

Husham... that is what it will do... given points, the standard distance represents the distance (a circle radius) that encompasses a certain proportion of the distribution. a 1 std deviation in both X and Y (check the formula for details) would suggest that 68% of the points would fall within that distance.. So for 50% you want about 0.6745 std distances. The tool will actually create circles using defaults. Otherwise you can use the radius to make your own buffers.

Re: Mean Center and range around the Mean

HushamMohamed — Sun, 30 Jul 2017 18:08:01 GMT

Thanks

Will try that and get back to you.