using dbscan, cluster, to indentify outliers

[geneshackman]

Hi

Question about dbscan. I am -just- learning about it, so I'm not even sure I can use it.

I have indicators by county, for example, total mortality rates. Supppose I have a list of counties and their values, I'll just list some of them here:

23     640

12     642

44     775

56     897

57     4,484

Looks like county 57 is outside the cluster of other counties.

Is this the sort of thing for which I can use dbscan or cluster analysis? Is there a 'gentle' introduction to dbscan or cluster analysis? I got this

https://support.sas.com/documentation/cdl/en/inmsref/67306/HTML/default/viewer.htm#p08w4hxeqsgklrn14...

Anything more introductory?

[geneshackman]

I forgot to say that the first column is county, the second column is rate.

[Ksharp]

Could try Primary Component Analysis .

proc pls

proc pca 

@Rick_SAS  wrote blogs about how to identity outliers .

[geneshackman]

Thanks, I will look at primary components analysis.

Gene