Dear R users:
 
It may be a silly question. I am trying to create a target diagram of 4 circles inside each other and adding some dots to describe different situations of validity and reliability. I need three of them.
 
one with all dots around the target.
one with all dots in about one place, but far from the target.
one with randomly scattered dots.
 
 I tried my best, but could not succeed. Can someone help me with creating such graph.
 
Thank you very much
abou
 
 
 
==========================
AbouEl-Makarim Aboueissa, Ph.D.
Associate Professor of Statistics
Graduate Program Coordinator
Department of Mathematics & Statistics
University of Southern Maine
96 Falmouth Street
P.O. Box 9300
Portland, ME 04104-9300
USA
 

Tel: (207) 228-8389
Fax: (207) 780-5607
Email: aaboueissa@usm.maine.edu
          aboueiss@yahoo.com
 
Office: 301C Payson Smith
 

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