math formulas

Question 1

Lincoln Index

Answer 1

(n1 x n2) / m2

n1= total caught & marked 1st time

n2= total caught 2nd time

m2= marked animals caught 2nd time

Question 2

Simpson’s Index of Biodiversity

Answer 2

1-(Σ(n/N)^2)

Question 3

Spearman’s Rank Correlation

Answer 3

1-((6 x ΣD^2)/(n^3 - n))

not the thing = reject the null.