Reporting the results:

Species richness and size of wildlife reserves

The species richness (number of large mammal species) is linearly related to reserve size (Figure 1). (Regression test: F_{1,4} = 14.332, *P* = 0.019)

Because the regression is significant, a linear model can be used to predict the effect of reserve size on species richness. The regression equation is:

*y = *0.003*x* + 8.310, R^{2} = 0.782

*Figure 1. Species richness against reserve size*