ES Mon 12/2 bell work

Front

What is sampling in science?

Back

Sampling is a method used by scientists to select a small group from a larger population to gather data and make estimates about the whole population.

Front

Why do scientists use sampling techniques?

Back

Scientists use sampling techniques because it is not possible to count an entire population.

Front

What is mark and recapture?

Back

Mark and recapture is a method used to estimate the size of a population by marking individuals, releasing them, and then recapturing them later.

Front

If I have 300 balls and mark 100, how many marked balls would I expect in a sample of 60?

Back

20

Front

What happens to population estimates if most marked individuals die before recapture?

Back

The population estimate will be an overestimate.

Front

In a mark and recapture study, if you capture 20 cats and mark them, then later capture 30 cats with 10 marked, what is the estimated population?

Back

60

Front

What is the formula for estimating population size in mark and recapture?

Back

Population size = (Number of marked individuals in first sample x Total number of individuals in second sample) / Number of marked individuals in second sample.

Front

What is a population in scientific terms?

Back

A population is a group of individuals of the same species living in a specific area.

Front

What does it mean if a sample is representative?

Back

A representative sample accurately reflects the characteristics of the larger population.

Front

What is an overestimate in population studies?

Back

An overestimate occurs when the estimated population size is larger than the actual population size.