Stones in a box ■ We know that c/NaT/R Hence a simple estimate is N=CR/T C= the number of fish or stones captured in the first round R= the total number of fish or stones captured in the second round T= the number of marked fish or white stones captured in the second round Ka-fu Wong C2007 ECON1003: Analysis of Economic Data Lesson 1-10Ka-fu Wong © 2007 ECON1003: Analysis of Economic Data Lesson1-10 Stones in a box ◼ We know that C/N ≈ T/R ◼ Hence, a simple estimate is N=CR/T ◼ C= the number of fish or stones captured in the first round. ◼ R= the total number of fish or stones captured in the second round. ◼ T= the number of marked fish or white stones captured in the second round