sample_differences.out.txt

[1] "SPECIES" "BEFORE"  "AFTER"  

	F test to compare two variances

data:  BEFORE and AFTER 
F = 1.0636, num df = 45555, denom df = 45555, p-value = 4.796e-11
alternative hypothesis: true ratio of variances is not equal to 1 
95 percent confidence interval:
 1.044220 1.083289 
sample estimates:
ratio of variances 
          1.063575 


	Wilcoxon rank sum test with continuity correction

data:  BEFORE and AFTER 
W = 961438864, p-value < 2.2e-16
alternative hypothesis: true location shift is not equal to 0 

null device 
          1