Capture-Recapture Formula

Question 1

Population

Answer 1

Everything or everybody that can possibly be involved in an investigation

Question 2

Census

Answer 2

A survey of everyone in the poulation

Question 3

Sampling units

Answer 3

The people or items to be sampled

Question 4

Sampling frame

Answer 4

A list of all the sampling units

Question 5

Petersen’s Capture-Recapture formula

Answer 5

m/n=M/N
m=captured marked members
n=sample population
M=marked members
N=number in the population

Question 6

What assumptions does the formula make?

Answer 6

Marks or tags dont get lost
Sample is big enough to be representative of the population
Population hasnt changed