Populations and Sampling Techniques

What is a suitable way to sample plants in a field?

• Counting Random Plants

• Using Quadrates

• Using Pooters

• Using Pitfall traps

What is a Belt Transect?

• A way of sampling a changing habitat

• A way of sampling a non-changing habitat

• A way of keeping up your pants

What is a suitable way to sample small invertebrates living on the ground.

• Quadrates

• Sweep nets

• Pitfall traps

• Water Sampling

The average weight of every person entering the mall within 3 hour period was 146 lb.

• Population

• Sample

Before a nation wide election, a polling place was trying to see who would win.
Which choice best represents a sample?

• A selection of voters over age 50.

• A selection of male voters.

• A selection of voters of different ages.

• All of these.

Population or Sample?

A survey of 1353 American households found that 18% of the households own a computer.

• Population

• Sample

A beverage company wanted to see if people in the United States liked their new logo.
Which choice best represents a population?

• A selection of logo artists.

• Every person in the United States.

• A selection of shoppers from different shoppers from different states.

• 3,800 children age 5-15

Population or Sample?

A factory overseer selects 40 threaded rods at random from those produced that week at the factory, then she tests their tensile strength.

• Population

• Sample

An area of 5m² was sampled using a quadrat to find a total of 10 sunflowers. If the area of the field was 200m² , what is the estimated number of sunflowers in the field?

• 50

• 20

• 40

• 400

Tags

NGSS.MS-LS2-4

When sampling organisms in a certain area using a quadrat you also need to know...

• Area of the quadrats

• Sum of area covered by quadrats and the field

• Area of the field & area covered by quadrats

• Area of the field