It doesn't seem silly to me; this is a standard figure/metaphor for
teaching reliability & validity. You could make such a figure in R, but
I would probably just use a drawing program (e.g., Serif, which can be
downloaded for free). Alternatively, you could just search the internet
for one, as I've seen several versions of this before. -Jeff
On 3/25/2012 8:59 AM, AbouEl-Makarim Aboueissa wrote:
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: [email protected]
[email protected]
Office: 301C Payson Smith
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