Refer to the table below, which shows hypothetical data for a cohort of robins. What is the survivorship value for the age class of 2 years?
A) 0.50
B) 0.40
C) 0.30
D) 0.20
E) 0.10

Question

Refer to the table below, which shows hypothetical data for a cohort of robins.  What is the survivorship value for the age class of 2 years?
A) 0.50 
B) 0.40 
C) 0.30 
D) 0.20 
E) 0.10

Quizplus · Accepted Answer

Survivorship is calculated by dividing the number of individuals in an age class by the number of individuals in the starting age class (in this case, 100). For the age class of 2 years, there are 40 individuals, so the survivorship value is 40/100 = 0.40.

Refer to the Table Below, Which Shows Hypothetical Data for a Cohort