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. Author manuscript; available in PMC: 2015 Jul 1.
Published in final edited form as: Prev Vet Med. 2015 May 8;120(0):328–335. doi: 10.1016/j.prevetmed.2015.04.013

Figure 2.

Figure 2

Pairwise correlation coefficients in the relative leukosis condemnation rates by distance. Each circle shows the correlation between pairwise combinations of states. The size of the circle relates to the number of overlapping data points available with larger circles representing more overlapping data and thus better estimated correlation coefficients. As noted in the main text, a large number of overlapping data points is necessary to accurately estimate correlation coefficients and so only pairs of states with greater than 100 overlapping data points were used in our analysis. Nevertheless, all pairwise correlation coefficients are shown in this figure. The solid black line is the best-fit regression line.