Mark and Recapture Method

The video tutorial explains the indirect method of estimating population size using the mark and recapture technique, also known as the Peterson method. The instructor uses beans to demonstrate the process, marking a subset and then calculating the total population based on subsequent samples. The importance of multiple trials to improve accuracy and reliability is emphasized, highlighting that real-life scenarios require repeated measurements to approximate the true population size.

What is the main reason for using an indirect method to determine population size?

• The population is too small.

• The population is too large to count directly.

• The population is not important.

• The population is easy to count.

What is another name for the mark and recapture method?

• The Lincoln method

• The Peterson method

• The Random method

• The Census method

In the first sample calculation, how many beans were marked?

• 25

• 20

• 15

• 10

How many marked beans were found in the first sample of 25 beans?

• 2

• 3

• 4

• 5

What was the estimated population size after the first sample calculation?

• 150

• 125

• 100

• 80

In the second sample calculation, how many beans were counted?

• 30

• 20

• 22

• 25

How many marked beans were found in the second sample of 22 beans?

• 7

• 6

• 8

• 5

What was the estimated population size after the second sample calculation?

• 63

• 60

• 75

• 70

Why is it important to perform multiple trials in the mark and recapture method?

• To make the process longer

• To improve the accuracy of the results

• To ensure the method is fun

• To increase the sample size

What is the average estimated population size after two calculations?

• 90

• 85

• 80

• 92