(a)[4]
Outline how a frame quadrat could be used to assess plant biodiversity in a field.
(b(i))[3]
Calculate the Spearman’s rank correlation for this data set. Present your answer to three decimal places. The equation for Spearman’s rank correlation ($r_s$) is: $r_s = 1 - \left( \frac{6 \times \Sigma D^2}{n^3 - n} \right)$ $\Sigma D^2$ has been found to equal $550$.
(b(ii))[2]
State and explain whether the null hypothesis is correct using your value of Spearman’s rank correlation and Table 9.1.